CVE-2026-93092

Summary

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

firmware: arm_scmi: Unregister device notifier before IDR teardown

The requested-devices notifier looks up protocol fwnodes from the active_protocols IDR. During remove, unregister the notifier before releasing and destroying active_protocols so no notifier callback can race with the IDR teardown.

Keep the bus notifier registered until after the protocol state is torn down, matching the existing remove ordering for SCMI bus users.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux53b8c25df7082edd78a3fc63e359abee0f28fa70 < 70a26b37389846f1f29a09f7983aa3f45feff529affected
LinuxLinux53b8c25df7082edd78a3fc63e359abee0f28fa70 < 492fb49eac24beecd6d3c5e4744a513e626f8dcfaffected
LinuxLinux53b8c25df7082edd78a3fc63e359abee0f28fa70 < f5e528f631425416f9b39e9d8b385c9f1ceb40d6affected
LinuxLinux53b8c25df7082edd78a3fc63e359abee0f28fa70 < 74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7aaffected
LinuxLinux53b8c25df7082edd78a3fc63e359abee0f28fa70 < 66a0bbf30cc14140fe13f63cd594a7c1ee352b75affected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References