CVE-2023-53638 PUBLISHED

octeon_ep: cancel queued works in probe error path

Assigner: Linux
Reserved: 07.10.2025 Published: 07.10.2025 Updated: 07.10.2025

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

octeon_ep: cancel queued works in probe error path

If it fails to get the devices's MAC address, octep_probe exits while leaving the delayed work intr_poll_task queued. When the work later runs, it's a use after free.

Move the cancelation of intr_poll_task from octep_remove into octep_device_cleanup. This does not change anything in the octep_remove flow, but octep_device_cleanup is called also in the octep_probe error path, where the cancelation is needed.

Note that the cancelation of ctrl_mbox_task has to follow intr_poll_task's, because the ctrl_mbox_task may be queued by intr_poll_task.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 24d4333233b378114106a1327d3d635a004f4387 to 62312e2f6466b5f0a120542a38b410d88a34ed00 (excl.)
  • affected from 24d4333233b378114106a1327d3d635a004f4387 to 758c91078165ae641b698750a72eafe7968b3756 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.4 is affected
  • unaffected from 0 to 6.4 (excl.)
  • unaffected from 6.4.12 to 6.4.* (incl.)
  • unaffected from 6.5 to * (incl.)

References