CVE-2025-21817 — block: mark GFP_NOIO around sysfs ->store()
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 se…
Published: 2025-02-27 · CVSS: Unscored
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()
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7