CVE-2023-54264: fs/sysv: Null check to prevent null-ptr-deref bug

Deferred
AliasesUBUNTU-CVE-2023-54264DEBIAN-CVE-2023-54264
Published 30-12-2025Last modified 11-05-2026

Vulnerability summary

CVE-2023-54264 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.3% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 13
SUSE-SU-2026:0263-1SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1SUSE-SU-2026:0293-1SUSE-SU-2026:0315-1SUSE-SU-2026:0316-1

Timeline

  1. 30-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fs/sysv: Null check to prevent null-ptr-deref bug sb_getblk(inode->i_sb, parent) return a null ptr and taking lock on that leads to the null-ptr-deref bug.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu125 products
  • linuxAll versions (No fix recorded) | < 5.4.0-169.187 | < 5.15.0-88.98
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1116.126 | < 5.15.0-1049.54
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.52-1 | < 6.4.11-1
Linux1 product
  • linux≥ e5657933863f43cc6bb76a54d659303dafaa9e58, < e976988bc245ec3768cc0f76bed7d05488a7dd0f | ≥ e5657933863f43cc6bb76a54d659303dafaa9e58, < baa60c66a310c50785289b0ede6fdce8ec3219c7 | ≥ e5657933863f43cc6bb76a54d659303dafaa9e58, < 0a44ceba77c3267f8505dda102a59367dc24caee | ≥ e5657933863f43cc6bb76a54d659303dafaa9e58, < 7f740bc696d4617f8ee44565e8ac0d36278a1e91 | ≥ e5657933863f43cc6bb76a54d659303dafaa9e58, < afd9a31b5aa4b3747f382d44a7b03b7b5d0b7635 | ≥ e5657933863f43cc6bb76a54d659303dafaa9e58, < 1416eebaad80bdc85ad9f97f27242011b031e2a9 | ≥ e5657933863f43cc6bb76a54d659303dafaa9e58, < e28f376dd8dfcc4e880ac101184132bc08703f6e | ≥ e5657933863f43cc6bb76a54d659303dafaa9e58, < ea2b62f305893992156a798f665847e0663c9f41 | 2.6.19

3 vendors · 127 products

References

12 links
Show all 12 references