PT-2025-9008 · Linux+2 · Linux Kernel+2
Thomas Hellström
·
Published
2025-02-27
·
Updated
2026-04-20
·
CVE-2025-21817
CVSS v3.1
5.5
Medium
| Vector | AV: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 potential deadlock issue has been identified in the Linux kernel. The problem occurs when the sysfs ->store() function is called while a queue is frozen, and memory allocation with GFP KERNEL is attempted, which may lead to a direct reclaim code path and cause a deadlock. This issue is related to the block layer and involves several ->store() callbacks, including update nr requests, wbt, and scheduler.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linux Kernel