{"vulnerability": "CVE-2025-21817", "sightings": [{"uuid": "dda81c76-3102-416d-b799-8bae567713f9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-21817", "type": "seen", "source": "https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0316/", "content": "", "creation_timestamp": "2026-03-19T00:00:00.000000Z"}, {"uuid": "9877a03d-4532-4db6-96b6-22b41261b7fc", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-21817", "type": "seen", "source": "https://t.me/cvedetector/19085", "content": "{\n  \"Source\": \"CVE FEED\",\n  \"Title\": \"CVE-2025-21817 - \"Linux Kernel Block Memory Allocation Deadlock\"\", \n  \"Content\": \"CVE ID : CVE-2025-21817 \nPublished : Feb. 27, 2025, 8:16 p.m. | 1\u00a0hour, 21\u00a0minutes ago \nDescription : In the Linux kernel, the following vulnerability has been resolved:  \n  \nblock: mark GFP_NOIO around sysfs ->store()  \n  \nsysfs ->store is called with queue freezed, meantime we have several  \n->store() 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 ->store() \nSeverity: 0.0 | NA \nVisit the link for more details, such as CVSS details, affected products, timeline, and more...\",\n  \"Detection Date\": \"27 Feb 2025\",\n  \"Type\": \"Vulnerability\"\n}\n\ud83d\udd39 t.me/cvedetector \ud83d\udd39", "creation_timestamp": "2025-02-27T23:27:01.000000Z"}, {"uuid": "92ba90f2-b993-475c-8bd8-4a2ab02869a9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-21817", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/18862", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-21817\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\nblock: mark GFP_NOIO around sysfs ->store()\n\nsysfs ->store is called with queue freezed, meantime we have several\n->store() 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 ->store()\n\ud83d\udccf Published: 2025-02-27T20:04:15.988Z\n\ud83d\udccf Modified: 2025-06-19T12:56:45.920Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/2566ce907e5d5db8a039647208e029ce559baa31\n2. https://git.kernel.org/stable/c/7c0be4ead1f8f5f8be0803f347de0de81e3b8e1c", "creation_timestamp": "2025-06-19T13:39:55.000000Z"}, {"uuid": "4604caa5-389b-4f1d-8293-0b2b66a448a8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-21817", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3lj6v7yqr6a2w", "content": "", "creation_timestamp": "2025-02-27T21:58:58.307566Z"}]}