PT-2025-8804 · Linux+5 · Linux Kernel+5

Published

2025-01-25

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Updated

2026-04-20

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CVE-2025-21721

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A vulnerability in the Linux kernel has been resolved, related to the nilfs2 file system. The issue involves error handling in directory manipulation routines, specifically in nilfs set link() and nilfs delete entry(), which can lead to BUG ON check failures when nilfs prepare chunk() returns an error. This error can occur due to metadata corruption or other reasons. The problem has been identified through fuzzing tests by syzbot.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Assertion Failure

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Weakness Enumeration

CWE-120CWE-617

Related Identifiers

BDU:2025-11844
CVE-2025-21721
DLA-4178-1
DLA-4193-1
DSA-5900-1
ECHO-0EFA-EEE0-9C73
OESA-2025-1446
OESA-2025-1450
USN-7510-1
USN-7510-2
USN-7510-3
USN-7510-4
USN-7510-5
USN-7510-6
USN-7510-7
USN-7510-8
USN-7511-1
USN-7511-2
USN-7511-3
USN-7512-1
USN-7516-1
USN-7516-2
USN-7516-3
USN-7516-4
USN-7516-5
USN-7516-6
USN-7516-7
USN-7516-8
USN-7516-9
USN-7517-1
USN-7517-2
USN-7517-3
USN-7518-1
USN-7521-1
USN-7521-2
USN-7521-3
USN-7539-1
USN-7540-1
USN-7593-1
USN-7602-1
USN-7640-1
USN-7651-1
USN-7651-2
USN-7651-3
USN-7651-4
USN-7651-5
USN-7651-6
USN-7652-1
USN-7653-1
USN-7737-1

Affected Products

Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Ubuntu