PT-2025-34388 · Linux+3 · Linux Kernel+3

Published

2025-01-01

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Updated

2026-05-26

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CVE-2025-38626

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 flaw exists in the Linux kernel’s f2fs implementation related to foreground garbage collection during block allocation in LFS mode. When the file system is mounted with the “mode=lfs” option, a system panic can occur due to aggressive block allocation in f2fs map blocks(). The issue arises because foreground garbage collection is not triggered promptly, leading to out-of-space conditions when multiple threads perform write operations in parallel using AIO, DIO, or bufio methods. The fix introduces a mechanism to trigger foreground garbage collection prior to block allocation within the f2fs map blocks() function.
Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Allocation of Resources Without Limits

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Weakness Enumeration

CWE-770

Related Identifiers

AZL-66614
BDU:2026-01566
CVE-2025-38626
ECHO-904F-01C6-E502
MGASA-2025-0234
MGASA-2025-0235
USN-7879-1
USN-7879-2
USN-7879-3
USN-7879-4
USN-7880-1
USN-7934-1
USN-8028-1
USN-8028-2
USN-8028-3
USN-8028-4
USN-8028-5
USN-8028-6
USN-8028-7
USN-8028-8
USN-8031-1
USN-8031-2
USN-8031-3
USN-8052-1
USN-8052-2
USN-8074-1
USN-8074-2
USN-8126-1

Affected Products

Debian
Linuxmint
Linux Kernel
Ubuntu