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CVE-2025-38701

5.5 · MEDIUM

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_dat…

Published Sep 4, 2025CWE-617EPSS 0.18%

Overview

CVE-2025-38701 is a medium-severity vulnerability. It was published on September 4, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/099b847ccc6c1ad2f805d13cfbcc83f5b6d4bc42Refgit.kernel.org/stable/c/1199a6399895f4767f0b9a68a6ff47c3f799b7c7Refgit.kernel.org/stable/c/279c87ef7b9da34f65c2e4db586e730b667a6fb9Refgit.kernel.org/stable/c/2817ac83cb4732597bf36853fe13ca616f4ee4e2Refgit.kernel.org/stable/c/7f322c12df7aeed1755acd3c6fab48c7807795fbRefgit.kernel.org/stable/c/8085a7324d8ec448c4a764af7853e19bbd64e17aRefgit.kernel.org/stable/c/81e7e2e7ba07e7c8cdce43ccad2f91adbc5a919cRefgit.kernel.org/stable/c/8a6f89d42e61788605722dd9faf98797c958a7e5Refgit.kernel.org/stable/c/d960f4b793912f35e9d72bd9d1e90553063fcbf1Reflists.debian.org/debian-lts-announce/2025/10/msg00007.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38701?

CVE-2025-38701 is a medium-severity vulnerability. It was published on September 4, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-38701?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38701?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-38701?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38701 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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