Bug 2402198 (CVE-2023-53638)

Summary: CVE-2023-53638 kernel: octeon_ep: cancel queued works in probe error path
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-10-07 16:02:24 UTC 
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.
Comment 1 Jon Moroney 2025-10-07 20:50:55 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100715-CVE-2023-53638-ded7@gregkh/T