BaseFortify

Publication date: 2026-01-13

Last updated on: 2026-01-14

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: xfs: fix a UAF problem in xattr repair The xchk_setup_xattr_buf function can allocate a new value buffer, which means that any reference to ab->value before the call could become a dangling pointer. Fix this by moving an assignment to after the buffer setup.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-13

Last Modified

2026-01-14

Generated

2026-07-06

AI Q&A

2026-01-14

EPSS Evaluated

2026-07-04

NVD

CVE-2025-68784

EUVD

EUVD-2026-2324

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is a Use-After-Free (UAF) issue in the Linux kernel's xfs filesystem, specifically in the xattr repair code. The function xchk_setup_xattr_buf can allocate a new buffer for extended attribute values, which causes any previous references to the old value pointer to become dangling pointers. This can lead to memory corruption or crashes. The fix involved moving an assignment to after the buffer setup to prevent referencing freed memory.

Impact Analysis

This vulnerability can lead to memory corruption or system instability due to use-after-free conditions in the kernel's filesystem code. Exploiting this could potentially allow an attacker to cause a denial of service (system crash) or possibly execute arbitrary code with kernel privileges, impacting system security and reliability.

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