Use After Free Affecting kernel-debuginfo package, versions <0:4.14.314-238.539.amzn2
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-AMZN2-KERNELDEBUGINFO-5663254
- published 1 Jun 2023
- disclosed 8 May 2023
Introduced: 8 May 2023
CVE-2023-32233 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel-debuginfo to version 0:4.14.314-238.539.amzn2 or higher.
This issue was patched in ALAS2-2023-2050.
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.
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32233
- https://bugzilla.redhat.com/show_bug.cgi?id=2196105
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1592a89942e9678f7d9c8030efa777c0d57edab
- https://github.com/torvalds/linux/commit/c1592a89942e9678f7d9c8030efa777c0d57edab
- https://news.ycombinator.com/item?id=35879660
- https://www.openwall.com/lists/oss-security/2023/05/08/4
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
- http://www.openwall.com/lists/oss-security/2023/05/15/5
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
- https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html
- https://security.netapp.com/advisory/ntap-20230616-0002/
- https://www.debian.org/security/2023/dsa-5402