{"id":"DEBIAN-CVE-2025-37759","details":"In the Linux kernel, the following vulnerability has been resolved:  ublk: fix handling recovery & reissue in ublk_abort_queue()  Commit 8284066946e6 (\"ublk: grab request reference when the request is handled by userspace\") doesn't grab request reference in case of recovery reissue. Then the request can be requeued & re-dispatch & failed when canceling uring command.  If it is one zc request, the request can be freed before io_uring returns the zc buffer back, then cause kernel panic:  [  126.773061] BUG: kernel NULL pointer dereference, address: 00000000000000c8 [  126.773657] #PF: supervisor read access in kernel mode [  126.774052] #PF: error_code(0x0000) - not-present page [  126.774455] PGD 0 P4D 0 [  126.774698] Oops: Oops: 0000 [#1] SMP NOPTI [  126.775034] CPU: 13 UID: 0 PID: 1612 Comm: kworker/u64:55 Not tainted 6.14.0_blk+ #182 PREEMPT(full) [  126.775676] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014 [  126.776275] Workqueue: iou_exit io_ring_exit_work [  126.776651] RIP: 0010:ublk_io_release+0x14/0x130 [ublk_drv]  Fixes it by always grabbing request reference for aborting the request.","modified":"2026-08-27T23:05:20.669311147Z","published":"2025-05-01T13:15:54.690Z","upstream":["CVE-2025-37759"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-37759"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.25-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-37759.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.25-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-37759.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}