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Linux CVE-2026-23251

| EUVD-2026-12856 MEDIUM
NULL Pointer Dereference (CWE-476)
2026-03-18 Linux
5.5
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

5
CVSS changed
May 21, 2026 - 18:37 NVD
5.5 (MEDIUM)
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
EUVD ID Assigned
Mar 18, 2026 - 17:30 euvd
EUVD-2026-12856
Analysis Generated
Mar 18, 2026 - 17:30 vuln.today
CVE Published
Mar 18, 2026 - 17:01 nvd
N/A

DescriptionNVD

In the Linux kernel, the following vulnerability has been resolved:

xfs: only call xf{array,blob}_destroy if we have a valid pointer

Only call the xfarray and xfblob destructor if we have a valid pointer, and be sure to null out that pointer afterwards. Note that this patch fixes a large number of commits, most of which were merged between 6.9 and 6.10.

AnalysisAI

This vulnerability in the Linux kernel's XFS filesystem code involves improper pointer validation in xfarray and xfblob destructor functions, where the destructors can be called with invalid (dangling) pointers if the pointer is not properly nulled after deallocation. The vulnerability affects Linux kernel versions 6.9 through 6.10 and later patch versions, potentially allowing information disclosure or system instability. …

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Vendor StatusVendor

Debian

linux
Release Status Fixed Version Urgency
bullseye not-affected - -
bullseye (security) fixed 5.10.251-1 -
bookworm not-affected - -
bookworm (security) fixed 6.1.164-1 -
trixie vulnerable 6.12.73-1 -
trixie (security) vulnerable 6.12.74-2 -
forky fixed 6.19.6-2 -
sid fixed 6.19.8-1 -
(unstable) fixed 6.19.6-1 -

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CVE-2026-23251 vulnerability details – vuln.today

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