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CVE-2023-53450

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUG_ON in ext4_mb_release_group_pa() If a malicious fuzzer overwrites the ext4 superblock while it is mounted su…

Published Oct 1, 2025CWE-617EPSS 0.16%

Overview

CVE-2023-53450 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:

ext4: remove a BUG_ON in ext4_mb_release_group_pa()

If a malicious fuzzer overwrites the ext4 superblock while it is

mounted such that the s_first_data_block is set to a very large

number, the calculation of the block group can underflow, and trigger

a BUG_ON check. Change this to be an ext4_warning so that we don't

crash the kernel.

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/185062a21976fbc38f2efd296951b02c4500cf65Refgit.kernel.org/stable/c/463808f237cf73e98a1a45ff7460c2406a150a0bRefgit.kernel.org/stable/c/53c14e7cc2257191ba15425c15638fc4f8abb92bRefgit.kernel.org/stable/c/978e5e9111af18741449b81fefd531a622dd969aRefgit.kernel.org/stable/c/b0fc279de4bf17e1710bb7e83906538ff8f11111Refgit.kernel.org/stable/c/bf2a16eb4e6d06124bd8436d4546f61539a65f29Refgit.kernel.org/stable/c/d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5bRefgit.kernel.org/stable/c/d87a4e4094c9879fc8acdff8ce59fdffa979c8e0Refgit.kernel.org/stable/c/ef16d8a1798db1a1604ac44ca1bd73ec6bebf483

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53450?

CVE-2023-53450 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-2023-53450?

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-2023-53450?

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-2023-53450?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53450 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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