GHSA-3f4p-8qj7-5fxpMediumCVSS 5.5
In the Linux kernel, the following vulnerability has been resolved: block: mark GFP_NOIO around...
🔗 CVE IDs covered (1)
📋 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()
🔗 References (5)
- https://nvd.nist.gov/vuln/detail/CVE-2025-21817
- https://git.kernel.org/stable/c/2566ce907e5d5db8a039647208e029ce559baa31
- https://git.kernel.org/stable/c/7c0be4ead1f8f5f8be0803f347de0de81e3b8e1c
- https://git.kernel.org/stable/c/a09280c39ea54080daf19cfaf4a3121a8d17d5cd
- https://github.com/advisories/GHSA-3f4p-8qj7-5fxp