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OTP 27.3.2

04 Apr 09:05
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OTP 27.3.2 Latest
Latest 
Patch Package:           OTP 27.3.2
Git Tag:                 OTP-27.3.2
Date:                    2025-04-04
Trouble Report Id:       OTP-19482, OTP-19560, OTP-19561, OTP-19562,
                         OTP-19563, OTP-19564, OTP-19565, OTP-19567,
                         OTP-19568, OTP-19569, OTP-19571
Seq num:                 ERIERL-1207, ERIERL-1208, ERIERL-1210,
                         ERIERL-1211, ERIERL-1212, ERIERL-1214,
                         ERIERL-1216, GH-9541, PR-9650, PR-9658,
                         PR-9661, PR-9676
System:                  OTP
Release:                 27
Application:             asn1-5.3.4, compiler-8.6.1, erts-15.2.5,
                         kernel-10.2.5, megaco-4.7.1, snmp-5.18.2,
                         ssl-11.2.11, xmerl-2.1.2
Predecessor:             OTP 27.3.1

Check out the git tag OTP-27.3.2, and build a full OTP system including
documentation. Apply one or more applications from this build as patches to your
installation using the 'otp_patch_apply' tool. For information on install
requirements, see descriptions for each application version below.

asn1-5.3.4

The asn1-5.3.4 application can be applied independently of other applications on
a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • Negative REAL numbers greater than -1 would be incorrectly encoded (the minus
    sign would be lost).

    Own Id: OTP-19567
    Related Id(s): ERIERL-1214, PR-9658

Full runtime dependencies of asn1-5.3.4

erts-14.0, kernel-9.0, stdlib-5.0

compiler-8.6.1

The compiler-8.6.1 application can be applied independently of other
applications on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • Fix the compiler crash when the inner-most tuple in a nested tuple with 3
    layers is updated.

    Own Id: OTP-19561
    Related Id(s): ERIERL-1208, ERIERL-1210, PR-9650

Full runtime dependencies of compiler-8.6.1

crypto-5.1, erts-13.0, kernel-8.4, stdlib-6.0

erts-15.2.5

The erts-15.2.5 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • On Windows, using socket:sendv, a large IOV (size > MAX), the tail was not
    sent.

    Own Id: OTP-19482

  • Uplift pcre 8.44 to pcre 8.45

    Own Id: OTP-19565

Full runtime dependencies of erts-15.2.5

kernel-9.0, sasl-3.3, stdlib-4.1

kernel-10.2.5

Note! The kernel-10.2.5 application cannot be applied independently of other
applications on an arbitrary OTP 27 installation.

   On a full OTP 27 installation, also the following runtime
   dependency has to be satisfied:
   -- erts-15.2.5 (first satisfied in OTP 27.3.2)

Fixed Bugs and Malfunctions

  • On Windows, using socket:sendv, a large IOV (size > MAX), the tail was not
    sent.

    Own Id: OTP-19482

  • gen_tcp connect with a sockaddr with loopback address failed.

    Own Id: OTP-19560
    Related Id(s): GH-9541

  • Remove debug printouts from gen_tcp_socket

    Own Id: OTP-19564

Full runtime dependencies of kernel-10.2.5

crypto-5.0, erts-15.2.5, sasl-3.0, stdlib-6.0

megaco-4.7.1

The megaco-4.7.1 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • Correct type spec for ActionReply

    Own Id: OTP-19563
    Related Id(s): ERIERL-1216

Full runtime dependencies of megaco-4.7.1

asn1-3.0, debugger-4.0, erts-12.0, et-1.5, kernel-8.0, runtime_tools-1.8.14,
stdlib-2.5

snmp-5.18.2

The snmp-5.18.2 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • When manager receives an v3 inform (request) it used engine-id and full
    address (including port number) to check if engine was known. This did not
    work if agent used ephemeral ports for notifications. Has now been changed to
    only use (context) engine-id and address (without port).

    Own Id: OTP-19562
    Related Id(s): ERIERL-1207

  • Fixed snmp_generic (dialyzer) spec for function table_func.

    Own Id: OTP-19568
    Related Id(s): ERIERL-1211

Full runtime dependencies of snmp-5.18.2

crypto-4.6, erts-12.0, kernel-8.0, mnesia-4.12, runtime_tools-1.8.14,
stdlib-5.0

ssl-11.2.11

Note! The ssl-11.2.11 application cannot be applied independently of other
applications on an arbitrary OTP 27 installation.

   On a full OTP 27 installation, also the following runtime
   dependency has to be satisfied:
   -- public_key-1.16.4 (first satisfied in OTP 27.1.3)

Fixed Bugs and Malfunctions

  • Correct the debug functionality for NSS keylogging for TLS-1.3 introduced in
    OTP-27.3.1 so that TLS-1.3 key updates items always get correct counter value
    and each item is logged as one single line.

    Own Id: OTP-19569
    Related Id(s): PR-9661

Full runtime dependencies of ssl-11.2.11

crypto-5.0, erts-15.0, inets-5.10.7, kernel-9.0, public_key-1.16.4,
runtime_tools-1.15.1, stdlib-6.0

xmerl-2.1.2

The xmerl-2.1.2 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • Corrected faulty type specification

    Corrected type specification for the input parameter of xmerl_xs:value_of/1.

    Also replaced underscore in the return type specifications of
    xmerl_xs:select/2, xmerl_xpath:string/2 and xmerl_xpath:string/3 with
    specified return values to improve documentation.

    Own Id: OTP-19571
    Related Id(s): ERIERL-1212, PR-9676

Full runtime dependencies of xmerl-2.1.2

erts-6.0, kernel-8.4, stdlib-2.5

Thanks to

Björn Gustavsson

Assets 13

OTP 27.3.1

28 Mar 13:10
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OTP-27.3.1
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OTP 27.3.1 
Patch Package:           OTP 27.3.1
Git Tag:                 OTP-27.3.1
Date:                    2025-03-28
Trouble Report Id:       OTP-19391, OTP-19437, OTP-19469, OTP-19525,
                         OTP-19527, OTP-19529, OTP-19542, OTP-19543,
                         OTP-19545, OTP-19546, OTP-19547, OTP-19548,
                         OTP-19549, OTP-19559
Seq num:                 #9172, CVE-2025-30211, ERIERL-1204,
                         ERIERL-1205, ERIERL-1206, GH-8891, GH-9483,
                         GH-9554, OTP-19472, OTP-19544, PR-9221,
                         PR-9486, PR-9534, PR-9545, PR-9553, PR-9577,
                         PR-9587, PR-9588, PR-9596, PR-9611, PR-9612
System:                  OTP
Release:                 27
Application:             asn1-5.3.3, erts-15.2.4, kernel-10.2.4,
                         mnesia-4.23.5, ssh-5.2.9, ssl-11.2.10,
                         stdlib-6.2.2
Predecessor:             OTP 27.3

Check out the git tag OTP-27.3.1, and build a full OTP system including
documentation. Apply one or more applications from this build as patches to your
installation using the 'otp_patch_apply' tool. For information on install
requirements, see descriptions for each application version below.

OTP-27.3.1

Fixed Bugs and Malfunctions

  • Update used ExDoc version to v0.37.3

    Own Id: OTP-19525
    Related Id(s): PR-9553

asn1-5.3.3

The asn1-5.3.3 application can be applied independently of other applications on
a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • The JER backend will now include the SIZE constraint in the type info for
    OCTET STRINGs, and a SIZE constraint with a range will now be included for BIT
    STRINGs. This does not change the actual encoding or decoding of JER, but can
    be useful for tools.

    Own Id: OTP-19542
    Related Id(s): ERIERL-1204, PR-9588

Improvements and New Features

  • When using the JSON encoding rules, it is now possible to call the decode/2
    function in the following way with data that has already been decoded by
    json:decode/1:

    SomeModule:decode(Type, {json_decoded, Decoded}).

    Own Id: OTP-19547
    Related Id(s): ERIERL-1206, PR-9611

Full runtime dependencies of asn1-5.3.3

erts-14.0, kernel-9.0, stdlib-5.0

erts-15.2.4

The erts-15.2.4 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • Behavior for socket:recv/3 has been improved. The behavior has also been
    clarified in the documentation.

    Own Id: OTP-19469
    Related Id(s): #9172

  • Trace messages due to receive tracing could potentially be delayed a very
    long time if the traced process waited in a receive expression without
    clauses matching on messages (timed wait), or just did not enter a receive
    expression for a very long time.

    Own Id: OTP-19527
    Related Id(s): PR-9577

  • Improve the naming of the (internal) esock mutex(es). It is now possible to
    configure (as in autoconf) the use of simple names for the esock mutex(es).

    Own Id: OTP-19548
    Related Id(s): OTP-19472

Full runtime dependencies of erts-15.2.4

kernel-9.0, sasl-3.3, stdlib-4.1

kernel-10.2.4

Note! The kernel-10.2.4 application cannot be applied independently of other
applications on an arbitrary OTP 27 installation.

   On a full OTP 27 installation, also the following runtime
   dependency has to be satisfied:
   -- erts-15.1 (first satisfied in OTP 27.1)

Fixed Bugs and Malfunctions

  • Behavior for socket:recv/3 has been improved. The behavior has also been
    clarified in the documentation.

    Own Id: OTP-19469
    Related Id(s): #9172

  • An infinite loop in CNAME loop detection that can cause Out Of Memory has been
    fixed. This affected CNAME lookup with the internal DNS resolver.

    Own Id: OTP-19545
    Related Id(s): PR-9587, OTP-19544

Full runtime dependencies of kernel-10.2.4

crypto-5.0, erts-15.1, sasl-3.0, stdlib-6.0

mnesia-4.23.5

The mnesia-4.23.5 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • With this change mnesia will merge schema of tables using external backends.

    Own Id: OTP-19437
    Related Id(s): PR-9534

Full runtime dependencies of mnesia-4.23.5

erts-9.0, kernel-5.3, stdlib-5.0

ssh-5.2.9

The ssh-5.2.9 application can be applied independently of other applications on
a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • Reception of malicious KEX init message does not result with ssh daemon
    excessive memory usage.

    Own Id: OTP-19543
    Related Id(s): CVE-2025-30211

  • Call to ssh:daemon_replace_options does not crash when argument is not a valid
    daemon ref.

    Own Id: OTP-19559
    Related Id(s): GH-9554, PR-9545

Full runtime dependencies of ssh-5.2.9

crypto-5.0, erts-14.0, kernel-9.0, public_key-1.6.1, runtime_tools-1.15.1,
stdlib-5.0, stdlib-6.0

ssl-11.2.10

Note! The ssl-11.2.10 application cannot be applied independently of other
applications on an arbitrary OTP 27 installation.

   On a full OTP 27 installation, also the following runtime
   dependency has to be satisfied:
   -- public_key-1.16.4 (first satisfied in OTP 27.1.3)

Fixed Bugs and Malfunctions

  • Correct handling of unassigned signature algorithms to properly ignore them
    instead of failing the handshake.

    Own Id: OTP-19529
    Related Id(s): GH-9483, PR-9486

  • Update key mechanism in CRL cache so that CRL DP with same URI path component
    becomes distinguishable from each other.

    Own Id: OTP-19549
    Related Id(s): GH-8891, PR-9612

Improvements and New Features

  • Add callback for NSS keylogging so that it can work as expected for all
    scenarios.

    Own Id: OTP-19391
    Related Id(s): PR-9221

Full runtime dependencies of ssl-11.2.10

crypto-5.0, erts-15.0, inets-5.10.7, kernel-9.0, public_key-1.16.4,
runtime_tools-1.15.1, stdlib-6.0

stdlib-6.2.2

The stdlib-6.2.2 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • Fixed crash when fetching initial_call when user code have modified the
    process_dictionary.

    Own Id: OTP-19546
    Related Id(s): ERIERL-1205, PR-9596

Full runtime dependencies of stdlib-6.2.2

compiler-5.0, crypto-4.5, erts-15.0, kernel-10.0, sasl-3.0

Thanks to

Alexandre Rodrigues, Marc Worrell, Sergei Shuvatov, zmstone

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OTP 26.2.5.10

28 Mar 14:49
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OTP-26.2.5.10
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OTP 26.2.5.10 
Patch Package:           OTP 26.2.5.10
Git Tag:                 OTP-26.2.5.10
Date:                    2025-03-28
Trouble Report Id:       OTP-19437, OTP-19469, OTP-19493, OTP-19501,
                         OTP-19527, OTP-19529, OTP-19543, OTP-19545,
                         OTP-19548, OTP-19559
Seq num:                 #9172, CVE-2025-30211, ERIERL-1195, GH-9483,
                         GH-9554, OTP-19472, OTP-19544, PR-9443,
                         PR-9486, PR-9499, PR-9534, PR-9545, PR-9577,
                         PR-9587
System:                  OTP
Release:                 26
Application:             erts-14.2.5.9, kernel-9.2.4.7,
                         mnesia-4.23.1.2, ssh-5.1.4.7, ssl-11.1.4.8
Predecessor:             OTP 26.2.5.9

 Check out the git tag OTP-26.2.5.10, and build a full OTP system
 including documentation. Apply one or more applications from this
 build as patches to your installation using the 'otp_patch_apply'
 tool. For information on install requirements, see descriptions for
 each application version below.

 ---------------------------------------------------------------------
 --- erts-14.2.5.9 ---------------------------------------------------
 ---------------------------------------------------------------------

 The erts-14.2.5.9 application can be applied independently of other
 applications on a full OTP 26 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19469    Application(s): erts, kernel
               Related Id(s): #9172

               Behavior for socket:recv/3 has been improved. The
               behavior has also been clarified in the documentation.


  OTP-19493    Application(s): erts
               Related Id(s): PR-9443

               Fix prim_inet:send/3 (and in extension
               gen_tcp:send/2,3) to use the selective recive
               optimization when waiting for a send acknowledgement.


  OTP-19527    Application(s): erts
               Related Id(s): PR-9577

               Trace messages due to receive tracing could potentially
               be delayed a very long time if the traced process
               waited in a receive expression without clauses matching
               on messages (timed wait), or just did not enter a
               receive expression for a very long time.


  OTP-19548    Application(s): erts
               Related Id(s): OTP-19472

               Improve the naming of the (internal) esock mutex(es).
               It is now possible to configure (as in autoconf) the
               use of simple names for the esock mutex(es).


 Full runtime dependencies of erts-14.2.5.9: kernel-9.0, sasl-3.3,
 stdlib-4.1


 ---------------------------------------------------------------------
 --- kernel-9.2.4.7 --------------------------------------------------
 ---------------------------------------------------------------------

 The kernel-9.2.4.7 application can be applied independently of other
 applications on a full OTP 26 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19469    Application(s): erts, kernel
               Related Id(s): #9172

               Behavior for socket:recv/3 has been improved. The
               behavior has also been clarified in the documentation.


  OTP-19545    Application(s): kernel
               Related Id(s): PR-9587, OTP-19544

               An infinite loop in CNAME loop detection that can cause
               Out Of Memory has been fixed. This affected CNAME
               lookup with the internal DNS resolver.


 Full runtime dependencies of kernel-9.2.4.7: crypto-5.0, erts-14.0,
 sasl-3.0, stdlib-5.0


 ---------------------------------------------------------------------
 --- mnesia-4.23.1.2 -------------------------------------------------
 ---------------------------------------------------------------------

 The mnesia-4.23.1.2 application can be applied independently of other
 applications on a full OTP 26 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19437    Application(s): mnesia
               Related Id(s): PR-9534

               With this change mnesia will merge schema of tables
               using external backends.


  OTP-19501    Application(s): mnesia
               Related Id(s): ERIERL-1195, PR-9499

               Mnesia could fail to load a table, if one of the copy
               holders was moved during startup.


 Full runtime dependencies of mnesia-4.23.1.2: erts-9.0, kernel-5.3,
 stdlib-5.0


 ---------------------------------------------------------------------
 --- ssh-5.1.4.7 -----------------------------------------------------
 ---------------------------------------------------------------------

 The ssh-5.1.4.7 application can be applied independently of other
 applications on a full OTP 26 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19543    Application(s): ssh
               Related Id(s): CVE-2025-30211

               Reception of malicious KEX init message does not result
               with ssh daemon excessive memory usage.


  OTP-19559    Application(s): ssh
               Related Id(s): GH-9554, PR-9545

               Call to ssh:daemon_replace_options does not crash when
               argument is not a valid daemon ref.


 Full runtime dependencies of ssh-5.1.4.7: crypto-5.0, erts-14.0,
 kernel-9.0, public_key-1.6.1, runtime_tools-1.15.1, stdlib-5.0,
 stdlib-5.0


 ---------------------------------------------------------------------
 --- ssl-11.1.4.8 ----------------------------------------------------
 ---------------------------------------------------------------------

 The ssl-11.1.4.8 application can be applied independently of other
 applications on a full OTP 26 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19529    Application(s): ssl
               Related Id(s): GH-9483, PR-9486

               Correct handling of unassigned signature algorithms to
               properly ignore them instead of failing the handshake.


 Full runtime dependencies of ssl-11.1.4.8: crypto-5.0, erts-14.0,
 inets-5.10.7, kernel-9.0, public_key-1.11.3, runtime_tools-1.15.1,
 stdlib-4.1


 ---------------------------------------------------------------------
 --- Thanks to -------------------------------------------------------
 ---------------------------------------------------------------------

 Alexandre Rodrigues, Marc Worrell, Sergei Shuvatov, zmsone


 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
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OTP 25.3.2.19

28 Mar 15:14
@github-actions github-actions
OTP-25.3.2.19
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OTP 25.3.2.19 
Patch Package:           OTP 25.3.2.19
Git Tag:                 OTP-25.3.2.19
Date:                    2025-03-28
Trouble Report Id:       OTP-19501, OTP-19527, OTP-19543, OTP-19545,
                         OTP-19559
Seq num:                 CVE-2025-30211, ERIERL-1195, GH-9554,
                         OTP-19544, PR-9499, PR-9545, PR-9577, PR-9587
System:                  OTP
Release:                 25
Application:             erts-13.2.2.15, kernel-8.5.4.5,
                         mnesia-4.21.4.4, ssh-4.15.3.11
Predecessor:             OTP 25.3.2.18

 Check out the git tag OTP-25.3.2.19, and build a full OTP system
 including documentation. Apply one or more applications from this
 build as patches to your installation using the 'otp_patch_apply'
 tool. For information on install requirements, see descriptions for
 each application version below.

 ---------------------------------------------------------------------
 --- erts-13.2.2.15 --------------------------------------------------
 ---------------------------------------------------------------------

 Note! The erts-13.2.2.15 application *cannot* be applied
       independently of other applications on an arbitrary OTP 25
       installation.

       On a full OTP 25 installation, also the following runtime
       dependencies have to be satisfied:
       -- kernel-8.5 (first satisfied in OTP 25.1)
       -- stdlib-4.1 (first satisfied in OTP 25.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-19527    Application(s): erts
               Related Id(s): PR-9577

               Trace messages due to receive tracing could potentially
               be delayed a very long time if the traced process
               waited in a receive expression without clauses matching
               on messages (timed wait), or just did not enter a
               receive expression for a very long time.


 Full runtime dependencies of erts-13.2.2.15: kernel-8.5, sasl-3.3,
 stdlib-4.1


 ---------------------------------------------------------------------
 --- kernel-8.5.4.5 --------------------------------------------------
 ---------------------------------------------------------------------

 Note! The kernel-8.5.4.5 application *cannot* be applied
       independently of other applications on an arbitrary OTP 25
       installation.

       On a full OTP 25 installation, also the following runtime
       dependencies have to be satisfied:
       -- erts-13.1.3 (first satisfied in OTP 25.2)
       -- stdlib-4.1.1 (first satisfied in OTP 25.1.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-19545    Application(s): kernel
               Related Id(s): PR-9587, OTP-19544

               An infinite loop in CNAME loop detection that can cause
               Out Of Memory has been fixed. This affected CNAME
               lookup with the internal DNS resolver.


 Full runtime dependencies of kernel-8.5.4.5: crypto-5.0, erts-13.1.3,
 sasl-3.0, stdlib-4.1.1


 ---------------------------------------------------------------------
 --- mnesia-4.21.4.4 -------------------------------------------------
 ---------------------------------------------------------------------

 The mnesia-4.21.4.4 application can be applied independently of other
 applications on a full OTP 25 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19501    Application(s): mnesia
               Related Id(s): ERIERL-1195, PR-9499

               Mnesia could fail to load a table, if one of the copy
               holders was moved during startup.


 Full runtime dependencies of mnesia-4.21.4.4: erts-9.0, kernel-5.3,
 stdlib-3.4


 ---------------------------------------------------------------------
 --- ssh-4.15.3.11 ---------------------------------------------------
 ---------------------------------------------------------------------

 The ssh-4.15.3.11 application can be applied independently of other
 applications on a full OTP 25 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19543    Application(s): ssh
               Related Id(s): CVE-2025-30211

               Reception of malicious KEX init message does not result
               with ssh daemon excessive memory usage.


  OTP-19559    Application(s): ssh
               Related Id(s): GH-9554, PR-9545

               Call to ssh:daemon_replace_options does not crash when
               argument is not a valid daemon ref.


 Full runtime dependencies of ssh-4.15.3.11: crypto-5.0, erts-11.0,
 kernel-6.0, public_key-1.6.1, runtime_tools-1.15.1, stdlib-3.15


 ---------------------------------------------------------------------
 --- Thanks to -------------------------------------------------------
 ---------------------------------------------------------------------

 Alexandre Rodrigues, Sergei Shuvatov


 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
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OTP 28.0-rc2

19 Mar 09:10
@proxyles proxyles
OTP-28.0-rc2
b7c3319
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OTP 28.0-rc2 Pre-release
Pre-release

OTP 28.0-rc2

Erlang/OTP 28.0-rc2 is the second release candidate of three before the OTP 28.0 release.

The intention with this release is to get feedback from our users. All feedback is welcome, even if it is only to say that it works for you.
We encourage users to try it out and give us feedback either by creating an issue at https://github.com/erlang/otp/issues or by posting to Erlang Forums.

All artifacts for the release can be downloaded from the Erlang/OTP Github release and you can view the new documentation at https://erlang.org/documentation/doc-16-rc2/doc. You can also install the latest release using kerl like this:

kerl build 28.0-rc2 28.0-rc2.

Starting with this release, a source Software Bill of Materials (SBOM) will describe the release on the Github Releases page. We welcome
feedback on the SBOM.

Erlang/OTP 28 is a new major release with new features, improvements as well as a few incompatibilities. Some of the new features are
highlighted below.

Many thanks to all contributors!

Highlights for RC2

  • Functionality making it possible for processes to enable reception of priority messages has been introduced in accordance with EEP 76.

Highlights for RC1

New language features

  • Comprehensions have been extended with "zip generators" allowing multiple generators to be run in parallel. For example, [A+B || A <- [1,2,3] && B <- [4,5,6]] will produce [5,7,9].

  • Generators in comprehensions can now be strict, meaning that if the generator pattern does not match, an exception will be raised instead of silently ignore the value that didn't match.

  • It is now possible to use any base for floating point numbers as per EEP 75: Based Floating Point Literals.

Compiler and JIT improvements

  • For certain types of errors, the compiler can now suggest corrections. For example, when attempting to use variable A that is not defined but A0 is, the compiler could emit the following message: variable 'A' is unbound, did you mean 'A0'?

  • The size of an atom in the Erlang source code was limited to 255 bytes in previous releases, meaning that an atom containing only emojis could contain only 63 emojis. While atoms are still only allowed to contain 255 characters, the number of bytes is no longer limited.

  • The warn_deprecated_catch option enables warnings for use of old-style catch expressions on the form catch Expr instead of the modern try ... catch ... end.

  • Provided that the map argument for a maps:put/3 call is known to the compiler to be a map, the compiler will replace such calls with the corresponding update using the map syntax.

  • Some BIFs with side-effects (such as binary_to_atom/1) are optimized in try ... catch in the same way as guard BIFs in order to gain performance.

  • The compiler’s alias analysis pass is now both faster and less conservative, allowing optimizations of records and binary construction to be applied in more cases.

ERTS

  • The trace:system/3 function has been added. It has a similar interface as erlang:system_monitor/2 but it also supports trace sessions.

  • os:set_signal/2 now supports setting handlers for the SIGWINCH, SIGCONT, and SIGINFO signals.

  • The two new BIFs erlang:processes_iterator/0 and erlang:process_next/1 make it possible to iterate over the process table in a way that scales better than erlang:processes/0.

Shell and terminal

  • The erl -noshell mode has been updated to have two sub modes called raw and cooked, where cooked is the old default behaviour and raw can be used to bypass the line-editing support of the native terminal. Using raw mode it is possible to read keystrokes as they occur without the user having to press Enter. Also, the raw mode does not echo the typed characters to stdout.

  • The shell now prints a help message explaining how to interrupt a running command when stuck executing a command for longer than 5 seconds.

STDLIB

  • The join(Binaries, Separator) function that joins a list of binaries has been added to the binary module.

  • By default, sets created by module sets will now be represented as maps.

  • Module re has been updated to use the newer PCRE2 library instead of the PCRE library.

  • There is a new zstd module that does Zstandard compression.

Dialyzer

SSL

  • The data handling for tls-v1.3 has been optimized.

Emacs mode (in the Tools application)

  • The indent-region in Emacs command will now handle multiline strings better.

For more details about new features and potential incompatibilities see the README.

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OTP 27.3

05 Mar 10:23
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OTP-27.3
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OTP 27.3

OTP 27.3

Erlang/OTP 27.3 is the third maintenance patch package for OTP 27, with mostly bug fixes as well as improvements.

For details about bugfixes and potential incompatibilities see the Erlang 27.3 README

The Erlang/OTP source can also be found at GitHub on the official Erlang repository,
https://github.com/erlang/otp

Download links for this and previous versions are found here:

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OTP 27.2.4

20 Feb 15:15
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OTP-27.2.4
fc23816
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OTP 27.2.4 
Patch Package:           OTP 27.2.4
Git Tag:                 OTP-27.2.4
Date:                    2025-02-20
Trouble Report Id:       OTP-19438, OTP-19466
Seq num:                 CVE-2025-26618, ERIERL-1173, ERIERL-1180
System:                  OTP
Release:                 27
Application:             snmp-5.18.1, ssh-5.2.7
Predecessor:             OTP 27.2.3

Check out the git tag OTP-27.2.4, and build a full OTP system including
documentation. Apply one or more applications from this build as patches to your
installation using the 'otp_patch_apply' tool. For information on install
requirements, see descriptions for each application version below.

snmp-5.18.1

The snmp-5.18.1 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • SNMP Agent transports type (intAgentTransports) was incorrectly not documented
    as a list of transports. Also add a couple of config file generation examples.

    Own Id: OTP-19438
    Related Id(s): ERIERL-1180

Full runtime dependencies of snmp-5.18.1

crypto-4.6, erts-12.0, kernel-8.0, mnesia-4.12, runtime_tools-1.8.14,
stdlib-5.0

ssh-5.2.7

The ssh-5.2.7 application can be applied independently of other applications on
a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • SFTP packets exceeding max packet size are not processed and dropped.

    Own Id: OTP-19466
    Related Id(s): ERIERL-1173, CVE-2025-26618

Full runtime dependencies of ssh-5.2.7

crypto-5.0, erts-14.0, kernel-9.0, public_key-1.6.1, runtime_tools-1.15.1,
stdlib-5.0, stdlib-6.0

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OTP 26.2.5.9

20 Feb 16:10
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OTP-26.2.5.9
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OTP 26.2.5.9 
Patch Package:           OTP 26.2.5.9
Git Tag:                 OTP-26.2.5.9
Date:                    2025-02-20
Trouble Report Id:       OTP-19466, OTP-19495
Seq num:                 CVE-2025-26618, ERIERL-1173, GH-8208, PR-8209
System:                  OTP
Release:                 26
Application:             erts-14.2.5.8, ssh-5.1.4.6
Predecessor:             OTP 26.2.5.8

 Check out the git tag OTP-26.2.5.9, and build a full OTP system
 including documentation. Apply one or more applications from this
 build as patches to your installation using the 'otp_patch_apply'
 tool. For information on install requirements, see descriptions for
 each application version below.

 ---------------------------------------------------------------------
 --- erts-14.2.5.8 ---------------------------------------------------
 ---------------------------------------------------------------------

 The erts-14.2.5.8 application can be applied independently of other
 applications on a full OTP 26 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19495    Application(s): erts
               Related Id(s): GH-8208, PR-8209

               Fixed BEAM crash when a custom thread sends a large map
               (>128 keys) externally encoded with for example
               erl_drv_send_term().


 Full runtime dependencies of erts-14.2.5.8: kernel-9.0, sasl-3.3,
 stdlib-4.1


 ---------------------------------------------------------------------
 --- ssh-5.1.4.6 -----------------------------------------------------
 ---------------------------------------------------------------------

 The ssh-5.1.4.6 application can be applied independently of other
 applications on a full OTP 26 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19466    Application(s): ssh
               Related Id(s): ERIERL-1173, CVE-2025-26618

               SFTP packets exceeding max packet size are not
               processed and dropped.


 Full runtime dependencies of ssh-5.1.4.6: crypto-5.0, erts-14.0,
 kernel-9.0, public_key-1.6.1, runtime_tools-1.15.1, stdlib-5.0,
 stdlib-5.0


 ---------------------------------------------------------------------
 --- Thanks to -------------------------------------------------------
 ---------------------------------------------------------------------

 Simon Cornish


 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
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OTP 25.3.2.18

20 Feb 16:39
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OTP-25.3.2.18
2a848b5
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OTP 25.3.2.18 
Patch Package:           OTP 25.3.2.18
Git Tag:                 OTP-25.3.2.18
Date:                    2025-02-20
Trouble Report Id:       OTP-19240, OTP-19466, OTP-19495
Seq num:                 CVE-2025-26618, ERIERL-1173, GH-8208,
                         GH-9208, PR-8209, PR-9286
System:                  OTP
Release:                 25
Application:             erts-13.2.2.14, public_key-1.13.3.6,
                         ssh-4.15.3.10
Predecessor:             OTP 25.3.2.17

 Check out the git tag OTP-25.3.2.18, and build a full OTP system
 including documentation. Apply one or more applications from this
 build as patches to your installation using the 'otp_patch_apply'
 tool. For information on install requirements, see descriptions for
 each application version below.

 ---------------------------------------------------------------------
 --- erts-13.2.2.14 --------------------------------------------------
 ---------------------------------------------------------------------

 Note! The erts-13.2.2.14 application *cannot* be applied
       independently of other applications on an arbitrary OTP 25
       installation.

       On a full OTP 25 installation, also the following runtime
       dependencies have to be satisfied:
       -- kernel-8.5 (first satisfied in OTP 25.1)
       -- stdlib-4.1 (first satisfied in OTP 25.1)


 --- Fixed Bugs and Malfunctions ---

  OTP-19495    Application(s): erts
               Related Id(s): GH-8208, PR-8209

               Fixed BEAM crash when a custom thread sends a large map
               (>128 keys) externally encoded with for example
               erl_drv_send_term().


 Full runtime dependencies of erts-13.2.2.14: kernel-8.5, sasl-3.3,
 stdlib-4.1


 ---------------------------------------------------------------------
 --- public_key-1.13.3.6 ---------------------------------------------
 ---------------------------------------------------------------------

 The public_key-1.13.3.6 application can be applied independently of
 other applications on a full OTP 25 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19240    Application(s): public_key
               Related Id(s): GH-9208, PR-9286

               Consider keyCertSign to compatible with extended key
               usage for TLS client/server auth in CAs, adhere to wide
               spread implementations


 Full runtime dependencies of public_key-1.13.3.6: asn1-3.0,
 crypto-4.6, erts-6.0, kernel-3.0, stdlib-3.5


 ---------------------------------------------------------------------
 --- ssh-4.15.3.10 ---------------------------------------------------
 ---------------------------------------------------------------------

 The ssh-4.15.3.10 application can be applied independently of other
 applications on a full OTP 25 installation.

 --- Fixed Bugs and Malfunctions ---

  OTP-19466    Application(s): ssh
               Related Id(s): ERIERL-1173, CVE-2025-26618

               SFTP packets exceeding max packet size are not
               processed and dropped.


 Full runtime dependencies of ssh-4.15.3.10: crypto-5.0, erts-11.0,
 kernel-6.0, public_key-1.6.1, runtime_tools-1.15.1, stdlib-3.15


 ---------------------------------------------------------------------
 --- Thanks to -------------------------------------------------------
 ---------------------------------------------------------------------

 Simon Cornish


 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
 ---------------------------------------------------------------------
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OTP 27.2.3

17 Feb 17:07
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OTP-27.2.3
b6ab3a3
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OTP 27.2.3 
Patch Package:           OTP 27.2.3
Git Tag:                 OTP-27.2.3
Date:                    2025-02-17
Trouble Report Id:       OTP-19457, OTP-19467, OTP-19486
Seq num:                 ERIERL-1189, ERIERL-1190, PR-9387, PR-9408,
                         PR-9418
System:                  OTP
Release:                 27
Application:             inets-9.3.2, ssl-11.2.8
Predecessor:             OTP 27.2.2

Check out the git tag OTP-27.2.3, and build a full OTP system including
documentation. Apply one or more applications from this build as patches to your
installation using the 'otp_patch_apply' tool. For information on install
requirements, see descriptions for each application version below.

inets-9.3.2

The inets-9.3.2 application can be applied independently of other applications
on a full OTP 27 installation.

Fixed Bugs and Malfunctions

  • Improved robustness of httpd startup procedure.

    Own Id: OTP-19486
    Related Id(s): ERIERL-1190, PR-9408

Full runtime dependencies of inets-9.3.2

erts-14.0, kernel-9.0, mnesia-4.12, public_key-1.13, runtime_tools-1.8.14,
ssl-9.0, stdlib-5.0, stdlib-6.0

ssl-11.2.8

Note! The ssl-11.2.8 application cannot be applied independently of other
applications on an arbitrary OTP 27 installation.

   On a full OTP 27 installation, also the following runtime
   dependency has to be satisfied:
   -- public_key-1.16.4 (first satisfied in OTP 27.1.3)

Fixed Bugs and Malfunctions

  • Setting protocol version to a lower value then supported by default in server
    API function called after ssl:listen/2 could result in wrong default values
    being used and connections failing with insufficient security.

    Own Id: OTP-19457
    Related Id(s): PR-9418

  • Improve error handling of server name indication fun. This implies that if the
    sni_fun returns undefined we will attempt connection with original option
    values, if it returns unrecognized we end the connection with
    UNRECOGNIZED_NAME alert and if provided options fail option verification we
    will end the connection with a HANDSHAKE_FAILURE and an error log.

    Own Id: OTP-19467
    Related Id(s): ERIERL-1189, PR-9387

Full runtime dependencies of ssl-11.2.8

crypto-5.0, erts-15.0, inets-5.10.7, kernel-9.0, public_key-1.16.4,
runtime_tools-1.15.1, stdlib-6.0

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