Use After Free Affecting kernel-debuginfo package, versions <0:4.14.326-245.539.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNELDEBUGINFO-6457591
- published 19 Mar 2024
- disclosed 6 Sep 2023
Introduced: 6 Sep 2023
CVE-2023-4244 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel-debuginfo to version 0:4.14.326-245.539.amzn2 or higher.
This issue was patched in ALAS2-2023-2264.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.
We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4244
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8
- https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html