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.
Published: 2025-10-07
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Tue, 03 Feb 2026 19:00:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:linux:linux_kernel:3.9:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.9:rc8:*:*:*:*:*:*

Mon, 05 Jan 2026 10:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Wed, 08 Oct 2025 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Wed, 08 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low


Tue, 07 Oct 2025 15:30:00 +0000

Type Values Removed Values Added
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.
Title btrfs: output extra debug info if we failed to find an inline backref
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-11T19:49:40.994Z

Reserved: 2025-10-07T15:16:59.663Z

Link: CVE-2023-53672

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2025-10-07T16:15:51.123

Modified: 2026-02-26T23:14:54.960

Link: CVE-2023-53672

cve-icon Redhat

Severity : Low

Publid Date: 2025-10-07T00:00:00Z

Links: CVE-2023-53672 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-08T13:35:16Z

Weaknesses