CVE-2025-38701
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-04

Last updated on: 2025-11-03

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ext4: do not BUG when INLINE_DATA_FL lacks system.data xattr A syzbot fuzzed image triggered a BUG_ON in ext4_update_inline_data() when an inode had the INLINE_DATA_FL flag set but was missing the system.data extended attribute. Since this can happen due to a maiciouly fuzzed file system, we shouldn't BUG, but rather, report it as a corrupted file system. Add similar replacements of BUG_ON with EXT4_ERROR_INODE() ii ext4_create_inline_data() and ext4_inline_data_truncate().
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Meta Information
Published
2025-09-04
Last Modified
2025-11-03
Generated
2026-06-16
AI Q&A
2025-09-04
EPSS Evaluated
2026-06-14
NVD
CVE-2025-38701
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.1.153-1
linux linux_kernel 5.10.244-1
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability occurs in the Linux kernel's ext4 file system where a BUG_ON is triggered if an inode has the INLINE_DATA_FL flag set but is missing the system.data extended attribute. This situation can be caused by a maliciously fuzzed file system image. Instead of causing a kernel BUG (crash), the fix changes the behavior to report the file system as corrupted, preventing a kernel panic.

Impact Analysis

This vulnerability can cause the Linux kernel to crash (BUG) when handling specially crafted ext4 file systems with inconsistent inline data flags and attributes. This could lead to denial of service or system instability if an attacker provides a maliciously fuzzed file system image.

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