PT-2025-36412 · Linux+4 · Linux Kernel+4

Published

2025-07-24

·

Updated

2026-04-20

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CVE-2025-39731

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 versions prior to 6.16.0-rc5-xfstests-ufs-g40f92e79b0aa #9
Description A flaw exists in the Linux kernel where vm unmap ram() may be called from an invalid context within the F2FS filesystem. This issue occurs when testing F2FS with xfstests using UFS backed virtual disks, potentially leading to kernel instability. The problem arises from an incorrect check within f2fs read end io(), which fails to properly verify interrupt status before unmapping pages asynchronously in an interrupt handler.
Recommendations Update the Linux kernel to version 6.16.0-rc5-xfstests-ufs-g40f92e79b0aa #9 or a later version that includes the fix.

Exploit

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

BDU:2025-15705
CVE-2025-39731
DLA-4328-1
ECHO-97E5-46C2-82FA
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

Astra Linux
Linuxmint
Linux Kernel
Red Os
Ubuntu