CVE-2025-21817

In the Linux kernel, the following vulnerability has been resolved: block: mark GFP_NOIO around sysfs ->store() sysfs ->store is called with queue freezed, meantime we have several ->store() callbacks(update_nr_requests, wbt, scheduler) to allocate memory with GFP_KERNEL which may run into direct reclaim code path, then potential deadlock can be caused. Fix the issue by marking NOIO around sysfs ->store()

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/2566ce907e5d5db8a039647208e029ce559baa31	Patch
https://git.kernel.org/stable/c/7c0be4ead1f8f5f8be0803f347de0de81e3b8e1c	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:6.13.2:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-02-27 20:16

Updated : 2025-10-28 02:53

NVD link : CVE-2025-21817

Mitre link : CVE-2025-21817

CVE.ORG link : CVE-2025-21817

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-667

Improper Locking

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