CVE-2025-68784
Unknown Unknown - Not Provided
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.
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Meta Information
Published
2026-01-13
Last Modified
2026-01-14
Generated
2026-06-16
AI Q&A
2026-01-14
EPSS Evaluated
2026-06-14
NVD
CVE-2025-68784
EUVD
EUVD-2026-2324
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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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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