{"id":"CVE-2026-74725","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74725","summary":"enic: fix tx_hang_reset use-after-free on device removal","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nenic: fix tx_hang_reset use-after-free on device removal\n\nenic_remove() cancels the reset and change_mtu_work items but does not\ncancel tx_hang_reset. A TX timeout that fires while the device is being\nremoved can schedule enic_tx_hang_reset() so that it runs after\nfree_netdev(), resulting in a use-after-free.\n\ncancel_work_sync() alone is not sufficient here: the still-live watchdog\nand notify paths can re-schedule these work items in the window between\nthe cancel and unregister_netdev(). Use disable_work_sync(), which\ncancels the work and blocks any subsequent schedule_work() from\nrequeuing it, and apply it to the reset and change_mtu_work items as\nwell so the same requeue race is closed for all teardown work.","published":"2026-08-22T15:33:16.460Z","modified":"2026-08-24T11:47:24.776122717Z","cvss":null,"epss":{"score":0.00168,"percentile":0.06202,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.104"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4f3464fc6c1f26afc504fd525c574f2bc14c9d42"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8619865f34fb3b130b567855382a5c4aadd522b9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e506e704b74748ffd0e1c92a7453ca2a959f832b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec680ea4ba1bca92a767fb7e7869758bfdd886e3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74725.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74725"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-24T11:47:24.776122717Z"}}