CVE-2025-40361
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-16

Last updated on: 2025-12-18

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock The parent function ext4_xattr_inode_lookup_create already uses GFP_NOFS for memory alloction, so the function ext4_xattr_inode_cache_find should use same gfp_flag.
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Meta Information
Published
2025-12-16
Last Modified
2025-12-18
Generated
2026-06-16
AI Q&A
2025-12-16
EPSS Evaluated
2026-01-08
NVD
CVE-2025-40361
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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Mitigation Strategies

To mitigate this vulnerability, update your Linux kernel to the latest version where the fix has been applied, specifically the change from GFP_KERNEL to GFP_NOFS in the ext4 filesystem code to avoid deadlocks.

Executive Summary

This vulnerability in the Linux kernel's ext4 filesystem involves improper use of memory allocation flags. Specifically, the function ext4_xattr_inode_cache_find used GFP_KERNEL for memory allocation, which could lead to a deadlock. The fix changes this to GFP_NOFS to avoid deadlock, aligning it with the parent function ext4_xattr_inode_lookup_create that already uses GFP_NOFS.

Impact Analysis

This vulnerability can cause a deadlock in the Linux kernel's ext4 filesystem, potentially leading to system hangs or crashes when accessing extended attributes. This can impact system stability and availability.

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