CVE-2026-92506 | BDVDB-2026-376263 Detail
LinuxLinux
Description#
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix requested device removal race scmi_protocol_device_unrequest() drops scmi_requested_devices_mtx while notifying listeners but continues to retain the per-protocol list head. When two SCMI drivers for the same protocol unregister concurrently, one thread can remove the final request and free the list head while the other is running its notifier. The latter then dereferences the freed list head after reacquiring the mutex and can free it a second time. Complete the list and IDR updates, including freeing an empty list head, before dropping the mutex. Keep the blocking notifier outside the critical section and retain only the detached request across the callback.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/803e50af43ab1c3f76cbc744e496532ec151f305
- https://git.kernel.org/stable/c/2ff7713b7308cd6bea3328f7cd750b5eaab42af3
- https://git.kernel.org/stable/c/1c35915eaaa81a12340c838c5c2ccb02be2194c3
- https://git.kernel.org/stable/c/c3d4ef1c0ca6917aad6f1093b49f3932944a8c19
- https://git.kernel.org/stable/c/21d35c5f46e99e9047bb9ded3ecb5ab440dd75b3
- https://git.kernel.org/stable/c/2c4097e6c4aed276c5e9ec2ab331ab397ea780bf
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.