{"id":"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.","modified":"2026-08-27T11:30:50.432100377Z","published":"2026-08-22T15:33:16.460Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74725.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"937317c7c1097aa878a5000e3aab616eb5c590c0"},{"fixed":"8619865f34fb3b130b567855382a5c4aadd522b9"},{"fixed":"e506e704b74748ffd0e1c92a7453ca2a959f832b"},{"fixed":"4f3464fc6c1f26afc504fd525c574f2bc14c9d42"},{"fixed":"ec680ea4ba1bca92a767fb7e7869758bfdd886e3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74725.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"6.12.104"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.45"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74725.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:H/I:H/A:H"}]}