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CVE-2023-53457

5.5 · MEDIUM

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…

Published Oct 1, 2025CWE-476EPSS 0.16%

Overview

CVE-2023-53457 is a medium-severity vulnerability. It was published on October 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0eaRefgit.kernel.org/stable/c/2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1Refgit.kernel.org/stable/c/3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3Refgit.kernel.org/stable/c/3e94d0d378d2754b26fc54b429582553f7b53e15Refgit.kernel.org/stable/c/47cfdc338d674d38f4b2f22b7612cc6a2763ba27Refgit.kernel.org/stable/c/a7225e9e09519deb7e0c42eb6070029cc456e84dRefgit.kernel.org/stable/c/a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2Refgit.kernel.org/stable/c/fd2db13fb72ff18c633a48229589d42ceb89d1f8

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53457?

CVE-2023-53457 is a medium-severity vulnerability. It was published on October 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-53457?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-53457?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-53457?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53457 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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