A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.
www.openwall.com/lists/oss-security/2021/10/31/1
lists.fedoraproject.org/archives/list/[email protected]/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/
lists.fedoraproject.org/archives/list/[email protected]/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/
support.apple.com/en-us/HT212814
support.apple.com/en-us/HT212815
support.apple.com/en-us/HT212816
support.apple.com/en-us/HT212819
support.apple.com/kb/HT212869
www.debian.org/security/2021/dsa-4995
www.debian.org/security/2021/dsa-4996