CVE-2026-93092
Published Sep 17, 2026
Description
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.
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References
Other References
https://git.kernel.org/stable/c/492fb49eac24beecd6d3c5e4744a513e626f8dcf
https://git.kernel.org/stable/c/66a0bbf30cc14140fe13f63cd594a7c1ee352b75
https://git.kernel.org/stable/c/70a26b37389846f1f29a09f7983aa3f45feff529
https://git.kernel.org/stable/c/74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a
https://git.kernel.org/stable/c/f5e528f631425416f9b39e9d8b385c9f1ceb40d6
Frequently Asked Questions
What is CVE-2026-93092? +
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.
How do I check if I'm vulnerable to CVE-2026-93092? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.