CVEvulnerability
CVE-2026-98758
- Status
- Received
- Published
- 2026-10-18
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: ucsi: glink: fix use-after-free of ucsi on remove
The pmic_glink client is released by the devres cleanup, which runs
after pmic_glink_ucsi_remove() has returned, so its notification
callbacks can queue work until then. Work that runs after
ucsi_unregister() has been called touches freed state: it dereferences
the connector array that ucsi_unregister() freed, or registers and
unregisters the instance a second time.
Disable both work items with disable_work_sync() before unregistering,
and unregister only if the instance is still registered.
This issue was found by an in-house static analysis tool.
References
- https://git.kernel.org/stable/c/41934f92e7a54d4080ac0b17aacc83224946785c git.kernel.org
- https://git.kernel.org/stable/c/432b58cd959e594909a581b4974396cdbc9d4ca1 git.kernel.org
- https://git.kernel.org/stable/c/63b269ec537dc0fd26d0bd64872c26860d108c9d git.kernel.org
- https://git.kernel.org/stable/c/ee8577de01c6b6c7dd1d76b52242c54d37a989f4 git.kernel.org