CVE-2026-74725 - enic: fix tx_hang_reset use-after-free on device removal

CVE-2026-74725 - enic: fix tx_hang_reset use-after-free on device removal

https://cvefeed.io/rssfeed/latest.atom / Sat, 08/22/2026 - 22:27
CVE ID :CVE-2026-74725
Published : Aug. 22, 2026, 4:16 p.m. | 3 hours, 53 minutes ago
Description :In the Linux kernel, the following vulnerability has been resolved: enic: fix tx_hang_reset use-after-free on device removal enic_remove() cancels the reset and change_mtu_work items but does not cancel tx_hang_reset. A TX timeout that fires while the device is being removed can schedule enic_tx_hang_reset() so that it runs after free_netdev(), resulting in a use-after-free. cancel_work_sync() alone is not sufficient here: the still-live watchdog and notify paths can re-schedule these work items in the window between the cancel and unregister_netdev(). Use disable_work_sync(), which cancels the work and blocks any subsequent schedule_work() from requeuing it, and apply it to the reset and change_mtu_work items as well so the same requeue race is closed for all teardown work.
Severity: 0.0 | NA
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