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 ->store()<br />
<br />
sysfs ->store is called with queue freezed, meantime we have several<br />
->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 ->store()