CVE-2023-54035
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix underflow in chain reference counter Set element addition error path decrements reference counter on chains twice: once on element release and again via nft_data_release(). Then, d6b478666ffa ("netfilter: nf_tables: fix underflow in object reference counter") incorrectly fixed this by removing the stateful object reference count decrement. Restore the stateful object decrement as in b91d90368837 ("netfilter: nf_tables: fix leaking object reference count") and let nft_data_release() decrement the chain reference counter, so this is done only once.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2023-54035
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2023-54035.html
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2024:2394
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.1.52-1 |
| debian | bullseye | affected | |
| debian | forky | fixed | 6.4.4-1 |
| debian | sid | fixed | 6.4.4-1 |
| debian | trixie | fixed | 6.4.4-1 |
References
- https://git.kernel.org/stable/c/b068314fd8ce751a7f906e55bb90f3551815f1a0
- https://git.kernel.org/stable/c/9c959671abc7d4ffdf34eed10c64492d43cb6a3c
- https://git.kernel.org/stable/c/b389139f12f287b8ed2e2628b72df89a081f0b59
- https://access.redhat.com/errata/RHSA-2024:2394
- https://www.suse.com/security/cve/CVE-2023-54035.html
- https://security-tracker.debian.org/tracker/CVE-2023-54035
Verify integrity in audit chain (admin only). AS-IS.