Use After Free Affecting bpftool package, versions <0:7.3.0-427.13.1.el9_4
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Test your applications- Snyk ID SNYK-ALMALINUX9-BPFTOOL-8339522
- published 4 Nov 2024
- disclosed 30 Apr 2024
Introduced: 30 Apr 2024
CVE-2024-1085 Open this link in a new tabHow to fix?
Upgrade AlmaLinux:9 bpftool to version 0:7.3.0-427.13.1.el9_4 or higher.
This issue was patched in ALSA-2024:2394.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by AlmaLinux.
See How to fix? for AlmaLinux:9 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.
The nft_setelem_catchall_deactivate() function checks whether the catch-all set element is active in the current generation instead of the next generation before freeing it, but only flags it inactive in the next generation, making it possible to free the element multiple times, leading to a double free vulnerability.
We recommend upgrading past commit b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7.
References
- https://errata.almalinux.org/9/ALSA-2024-2394.html
- https://www.redhat.com/security/data/cve/CVE-2024-1085.html
- https://access.redhat.com/errata/RHSA-2024:2394
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7
- https://kernel.dance/b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7