{"cve":"CVE-2025-37759","nvd":{"published":"2025-05-01T13:15:54.690","modified":"2026-10-21T13:18:06.220","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nublk: fix handling recovery & reissue in ublk_abort_queue()\n\nCommit 8284066946e6 (\"ublk: grab request reference when the request is handled\nby userspace\") doesn't grab request reference in case of recovery reissue.\nThen the request can be requeued & re-dispatch & failed when canceling\nuring command.\n\nIf it is one zc request, the request can be freed before io_uring\nreturns the zc buffer back, then cause kernel panic:\n\n[  126.773061] BUG: kernel NULL pointer dereference, address: 00000000000000c8\n[  126.773657] #PF: supervisor read access in kernel mode\n[  126.774052] #PF: error_code(0x0000) - not-present page\n[  126.774455] PGD 0 P4D 0\n[  126.774698] Oops: Oops: 0000 [#1] SMP NOPTI\n[  126.775034] CPU: 13 UID: 0 PID: 1612 Comm: kworker/u64:55 Not tainted 6.14.0_blk+ #182 PREEMPT(full)\n[  126.775676] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014\n[  126.776275] Workqueue: iou_exit io_ring_exit_work\n[  126.776651] RIP: 0010:ublk_io_release+0x14/0x130 [ublk_drv]\n\nFixes it by always grabbing request reference for aborting the request.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/0a21d259ca4d6310fdfcc0284ebbc000e66cbf70","https://git.kernel.org/stable/c/5d34a30efac9c9c93e150130caa940c0df6053c1","https://git.kernel.org/stable/c/6ee6bd5d4fce502a5b5a2ea805e9ff16e6aa890f","https://git.kernel.org/stable/c/ab41bf5a211fbec3a85e025658ed90a911ccb692","https://git.kernel.org/stable/c/caa5c8a2358604f38bf0a4afaa5eacda13763067"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2025-37759","score":0.0024,"percentile":0.14937,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}