CVE-2025-21817

ADVISORY - nist

Summary

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()

EPSS Score⁠: 0.00119 (0.021)

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-667⁠

Improper Locking

ADVISORY - redhat

CWE-833⁠

Deadlock

Impacted images

Advisories

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