What is CVE-2023-54035?

CVE-2023-54035 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, 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 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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

High

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 2026-08-04

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

3 total

Details

CVE ID CVE-2023-54035

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-12-24

Modified 2026-08-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-54035?

CVE-2023-54035 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . 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.
What is the CVSS score for CVE-2023-54035?

CVE-2023-54035 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
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.