CVE-2025-38701

low-risk

Published 2025-09-04

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().

Do I need to act?

0.01% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.5/10 Medium

LOCAL / LOW complexity

Affected Products (2)

Linux Kernel

Debian Linux

Affected Vendors

Debian Linux

References (11)

Patch https://git.kernel.org/stable/c/099b847ccc6c1ad2f805d13cfbcc83f5b6d4bc42

Patch https://git.kernel.org/stable/c/1199a6399895f4767f0b9a68a6ff47c3f799b7c7

Patch https://git.kernel.org/stable/c/279c87ef7b9da34f65c2e4db586e730b667a6fb9

Patch https://git.kernel.org/stable/c/2817ac83cb4732597bf36853fe13ca616f4ee4e2

Patch https://git.kernel.org/stable/c/7f322c12df7aeed1755acd3c6fab48c7807795fb

Patch https://git.kernel.org/stable/c/8085a7324d8ec448c4a764af7853e19bbd64e17a

Patch https://git.kernel.org/stable/c/81e7e2e7ba07e7c8cdce43ccad2f91adbc5a919c

Patch https://git.kernel.org/stable/c/8a6f89d42e61788605722dd9faf98797c958a7e5

Patch https://git.kernel.org/stable/c/d960f4b793912f35e9d72bd9d1e90553063fcbf1

Mailing List https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

Mailing List https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

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low-risk

Severity 18/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 7/34 · Low