{"id":"CVE-2025-37759","summary":"ublk: fix handling recovery & reissue in ublk_abort_queue()","details":"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.","modified":"2026-03-20T12:42:25.394172Z","published":"2025-05-01T12:56:03.462Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37759.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0a21d259ca4d6310fdfcc0284ebbc000e66cbf70"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5d34a30efac9c9c93e150130caa940c0df6053c1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ee6bd5d4fce502a5b5a2ea805e9ff16e6aa890f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/caa5c8a2358604f38bf0a4afaa5eacda13763067"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37759.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-37759"},{"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":"8284066946e6d9cc979566ce698fe24e7ca0b31e"},{"fixed":"caa5c8a2358604f38bf0a4afaa5eacda13763067"},{"fixed":"5d34a30efac9c9c93e150130caa940c0df6053c1"},{"fixed":"0a21d259ca4d6310fdfcc0284ebbc000e66cbf70"},{"fixed":"6ee6bd5d4fce502a5b5a2ea805e9ff16e6aa890f"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37759.json"}}],"schema_version":"1.7.5"}