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CVE-2023-53672

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: btrfs: output extra debug info if we failed to find an inline backref [BUG] Syzbot reported several warning triggered inside lo…

Published Oct 7, 2025EPSS 0.14%

Overview

CVE-2023-53672 is a medium-severity vulnerability. It was published on October 7, 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:

btrfs: output extra debug info if we failed to find an inline backref

[BUG]

Syzbot reported several warning triggered inside

lookup_inline_extent_backref().

[CAUSE]

As usual, the reproducer doesn't reliably trigger locally here, but at

least we know the WARN_ON() is triggered when an inline backref can not

be found, and it can only be triggered when @insert is true. (I.e.

inserting a new inline backref, which means the backref should already

exist)

[ENHANCEMENT]

After the WARN_ON(), dump all the parameters and the extent tree

leaf to help debug.

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/28062cd6eda04035d8f6ded2001292ac8b496149Refgit.kernel.org/stable/c/376b41524b71e494514720bd6114325b0a2ed19cRefgit.kernel.org/stable/c/400e08a16604b534fdd82c5a288fa150d04f5f79Refgit.kernel.org/stable/c/6994f806c6d1ae8b59344d3700358547f3b3fe1dRefgit.kernel.org/stable/c/7afbfde45d665953b4d5a42a721e15bf0315d89bRefgit.kernel.org/stable/c/7f72f50547b7af4ddf985b07fc56600a4deba281Refgit.kernel.org/stable/c/b7c3cf2f6c42e6688b1c37215a0b1663f982f915Refgit.kernel.org/stable/c/e70ba449b04b40584bdabb383d10455397cbf177

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53672?

CVE-2023-53672 is a medium-severity vulnerability. It was published on October 7, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-53672?

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-2023-53672?

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-2023-53672?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53672 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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