VULNERABILITY INTELLIGENCE
CVE-2025-21817
CVSS score5.5 MEDIUM
EPSS probability0.15%
CISA KEVNot currently listed
Published2025-02-27
Last modified2026-09-07
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
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()
Weakness classification
- nvd@nist.gov: CWE-667