{"id":"CVE-2025-21817","summary":"block: mark GFP_NOIO around sysfs -\u003estore()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: mark GFP_NOIO around sysfs -\u003estore()\n\nsysfs -\u003estore is called with queue freezed, meantime we have several\n-\u003estore() callbacks(update_nr_requests, wbt, scheduler) to allocate\nmemory with GFP_KERNEL which may run into direct reclaim code path,\nthen potential deadlock can be caused.\n\nFix the issue by marking NOIO around sysfs -\u003estore()","modified":"2026-04-24T06:42:50.482391051Z","published":"2025-02-27T20:04:15.988Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21817.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2566ce907e5d5db8a039647208e029ce559baa31"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7c0be4ead1f8f5f8be0803f347de0de81e3b8e1c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21817.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21817"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8985da5481562e96b95e94ed8e5cc9b6565eb82b"},{"fixed":"2566ce907e5d5db8a039647208e029ce559baa31"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c99f66e4084a62a2cc401c4704a84328aeddc9ec"},{"fixed":"7c0be4ead1f8f5f8be0803f347de0de81e3b8e1c"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21817.json"}}],"schema_version":"1.7.5"}