CVE-2025-21817

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Source
https://cve.org/CVERecord?id=CVE-2025-21817
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21817.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-21817
Downstream
Published
2025-02-27T20:04:15.988Z
Modified
2026-05-15T11:53:38.215684180Z
Summary
block: mark GFP_NOIO around sysfs ->store()
Details

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(updatenrrequests, 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()

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21817.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.13.2
Fixed
6.13.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21817.json"