Linux Kernel up to 6.12.74/6.18.15/6.19.5 xfs null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.12.74/6.18.15/6.19.5. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component xfs. Such manipulation leads to an unknown weakness. This vulnerability is referenced as CVE-2026-23251. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.12.74/6.18.15/6.19.5. Affected by this issue is some unknown processing of the component xfs. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. The impact remains unknown. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-23251 since 01/13/2026. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 318589 (Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50293)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.12.75, 6.18.16, 6.19.6 or 7.0-rc1 eliminates this vulnerability. Applying the patch 5de5be3ed7e7fa4ebde4f4b58fb9a629644f9202/c9ccefacae0d8091683447bc338bd7741417039d/d827612c81a26cc1dd83a211cfcb5ad8765da0c4/ba408d299a3bb3c5309f40c5326e4fb83ead4247 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (318589) and CERT Bund (WID-SEC-2026-0790). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Google Cloud Platform
  • Ubuntu Linux
  • SUSE Linux
  • IGEL OS
  • WatchGuard Firebox
  • Open Source Linux Kernel

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 318589
Nessus Name: Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50293)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.75/6.18.16/6.19.6/7.0-rc1
Patch: 5de5be3ed7e7fa4ebde4f4b58fb9a629644f9202/c9ccefacae0d8091683447bc338bd7741417039d/d827612c81a26cc1dd83a211cfcb5ad8765da0c4/ba408d299a3bb3c5309f40c5326e4fb83ead4247

Timelineinfo

01/13/2026 CVE reserved
03/18/2026 +64 days Advisory disclosed
03/18/2026 +0 days VulDB entry created
06/04/2026 +78 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23251 (🔒)
GCVE (CVE): GCVE-0-2026-23251
GCVE (VulDB): GCVE-100-351560
CERT Bund: WID-SEC-2026-0790 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 03/18/2026 19:38
Updated: 06/04/2026 17:10
Changes: 03/18/2026 19:38 (57), 03/19/2026 19:09 (7), 03/24/2026 17:52 (1), 04/10/2026 09:27 (1), 05/21/2026 23:26 (12), 06/04/2026 17:10 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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