CVE-2025-21817

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
27/02/2025
Last modified:
27/02/2025

Description

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

Impact