What is CVE-2023-54035?

CVE-2023-54035 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 4.19.316 onward and patched in 6.4.4 and 6.5. CVE-2023-54035 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-54035?

CVE-2023-54035 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2023-54035?

Yes, CVE-2023-54035 has been patched. Fixed versions include 6.4.4 and 6.5. If you are running Linux kernel 4.19.316 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-54035 actively exploited?

CVE-2023-54035 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-54035

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.

Package Linux Kernel

Published 2025-12-24

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 4.19.316, 5.4.262, 5.10.188, 5.15.121, 6.3.10, 6.4 and later are affected. Fixed in 6.4.4, 6.5 and their respective stable series.

Affected from

≥ 4.19.316 ≥ 5.4.262 ≥ 5.10.188 ≥ 5.15.121 ≥ 6.3.10 ≥ 6.4

Fixed in

✓ 6.4.4 6.4.x ✓ 6.5

References

The following references provide additional information about CVE-2023-54035 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/9c959671abc7d4ffdf34eed10c64492d43cb6a3c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b068314fd8ce751a7f906e55bb90f3551815f1a0
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b389139f12f287b8ed2e2628b72df89a081f0b59
Patch

Frequently asked questions

What is CVE-2023-54035?

CVE-2023-54035 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.19.316 onward and has been patched in 6.4.4 and 6.5. CVE-2023-54035 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2023-54035?

Yes — CVE-2023-54035 has been patched. Fixed versions include 6.4.4 and 6.5. If you are running Linux kernel 4.19.316 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-54035 actively exploited?

No — CVE-2023-54035 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.