An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra, watchOS 5.2, macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra, iOS 12.2. A remote attacker may be able to leak memory.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-8547
• https://support.apple.com/en-us/HT209599
• https://support.apple.com/en-us/HT209600
• https://support.apple.com/en-us/HT209602
• https://support.apple.com/en-us/HT210119