Use After Free Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-477.10.1.rt7.274.el8_8
Threat Intelligence
EPSS
0.04% (6th
percentile)
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUGKVM-3046812
- published 14 Oct 2022
- disclosed 9 Oct 2022
Introduced: 9 Oct 2022
CVE-2022-42703 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-debug-kvm to version 0:4.18.0-477.10.1.rt7.274.el8_8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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://access.redhat.com/security/cve/CVE-2022-42703
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2351
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.7
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2555283eb40df89945557273121e9393ef9b542b
- https://github.com/torvalds/linux/commit/2555283eb40df89945557273121e9393ef9b542b
- https://googleprojectzero.blogspot.com/2022/12/exploiting-CVE-2022-42703-bringing-back-the-stack-attack.html
CVSS Scores
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