What is CVE-2023-53672?

CVE-2023-53672 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.9 onward and patched in 4.14.326, 4.19.295, 5.4.257 and others. CVE-2023-53672 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53672?

CVE-2023-53672 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-53672?

Yes, CVE-2023-53672 has been patched. Fixed versions include 4.14.326, 4.19.295, 5.4.257 and others. If you are running Linux kernel 3.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53672 actively exploited?

CVE-2023-53672 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53672

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 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.

Package Linux Kernel

Published 2025-10-07

Last modified 2026-02-26

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 3.9 and later are affected. Fixed in 4.14.326, 4.19.295, 5.4.257, 5.10.197, 5.15.133, 6.1.55, 6.5.5, 6.6 and their respective stable series.

Affected from

≥ 3.9

Fixed in

✓ 4.14.326 4.14.x ✓ 4.19.295 4.19.x ✓ 5.4.257 5.4.x ✓ 5.10.197 5.10.x ✓ 5.15.133 5.15.x ✓ 6.1.55 6.1.x ✓ 6.5.5 6.5.x ✓ 6.6

References

The following references provide additional information about CVE-2023-53672 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/28062cd6eda04035d8f6ded2001292ac8b496149
Patch
Kernel patch commit
https://git.kernel.org/stable/c/376b41524b71e494514720bd6114325b0a2ed19c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/400e08a16604b534fdd82c5a288fa150d04f5f79
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2023-53672

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-10-07

Modified 2026-02-26

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53672?

CVE-2023-53672 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.9 onward and has been patched in 4.14.326, 4.19.295, 5.4.257 and others. CVE-2023-53672 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53672?

CVE-2023-53672 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-53672?

Yes — CVE-2023-53672 has been patched. Fixed versions include 4.14.326, 4.19.295, 5.4.257 and others. If you are running Linux kernel 3.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53672 actively exploited?

No — CVE-2023-53672 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.