5.5

CVE-2023-53457: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2023-53457DEBIAN-CVE-2023-53457
Published 01-10-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2023-53457 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.3% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 14 · Related 14
SUSE-SU-2025:03600-1SUSE-SU-2025:03615-1SUSE-SU-2025:03628-1SUSE-SU-2025:03634-1SUSE-SU-2025:20851-1SUSE-SU-2025:20861-1

Timeline

  1. 01-10-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: FS: JFS: Fix null-ptr-deref Read in txBegin Syzkaller reported an issue where txBegin may be called on a superblock in a read-only mounted filesystem which leads to NULL pointer deref. This could be solved by checking if the filesystem is read-only before calling txBegin, and returning with appropiate error code.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu124 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)
Linux2 products
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a7225e9e09519deb7e0c42eb6070029cc456e84d | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 1b4c144767736221cad92c132f72b3c6ed06a0ea | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3e94d0d378d2754b26fc54b429582553f7b53e15 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < fd2db13fb72ff18c633a48229589d42ceb89d1f8 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 47cfdc338d674d38f4b2f22b7612cc6a2763ba27 | 2.6.12
  • linux_kernel≥ 2.6.12.1, < 4.14.324 | ≥ 4.15, < 4.19.293 | ≥ 4.20, < 5.4.255 | ≥ 5.5, < 5.10.192 | ≥ 5.11, < 5.15.123 | ≥ 5.16, < 6.1.42 | ≥ 6.2, < 6.4.7 | 2.6.12 | 2.6.12:rc2 | 2.6.12:rc3 | 2.6.12:rc4 | 2.6.12:rc5
Debian1 product
  • linux< 6.1.52-1 | < 6.4.11-1

3 vendors · 127 products

References

12 links
Show all 12 references