CVE-2022-42703

Description

mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.

References

https://bugs.chromium.org/p/project-zero/issues/detail?id=2351

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542b

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7

https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542b

https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html

Details