CVE Catalog

CVE-2026-74725

HighCVSS 7.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.13%

2th percentile - higher than 2% of all known CVEs

Summary

In the Linux kernel, in the enic driver, enic_remove does not cancel the tx_hang_reset work, which can lead to use-after-free after free_netdev(). The fix uses disable_work_sync() instead of cancel_work_sync() to block re-scheduling of the work.

Risk Assessment

Risk of system crash or unpredictable behavior during removal of enic network devices.

Recommendation

Apply a kernel update containing the fix that uses disable_work_sync() for all teardown work.

Other vulnerabilities in Linux kernel

See all
Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS