CVE-2025-38114

In the Linux kernel, the following vulnerability has been resolved:

e1000: Move cancel_work_sync to avoid deadlock

Previously, e1000_down called cancel_work_sync for the e1000 reset task (via e1000_down_and_stop), which takes RTNL.

As reported by users and syzbot, a deadlock is possible in the following scenario:

CPU 0:

• RTNL is held
• e1000_close
• e1000_down
• cancel_work_sync (cancel / wait for e1000_reset_task())

CPU 1:

• process_one_work
• e1000_reset_task
• take RTNL

To remedy this, avoid calling cancel_work_sync from e1000_down (e1000_reset_task does nothing if the device is down anyway). Instead, call cancel_work_sync for e1000_reset_task when the device is being removed.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.