Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix NULL dereference on notify error path Since commit b5daf93b809d1 ("firmware: arm_scmi: Avoid notifier registration for unsupported events") the call chains leading to the helper __scmi_event_handler_get_ops expect an ERR_PTR to be returned on failure to get an handler for the requested event key, while the current helper can still return a NULL when no handler could be found or created. Fix by forcing an ERR_PTR return value when the handler reference is NULL.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.17, < 6.18.20 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/555317d6100164748f7d09f80142739bd29f0cdaPatch
- https://git.kernel.org/stable/c/70d9bd9a2e683afe6200b0c20af22f06f1a199a4Patch
- https://git.kernel.org/stable/c/8414d2800c34528467df23ce6192c254a73e4459Patch
FAQ
What is CVE-2026-31544?
CVE-2026-31544 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix NULL dereference on notify error path Since commit b5daf93b809d1 ("firmware: arm_scmi: Avoid notifier regi...
How severe is CVE-2026-31544?
CVE-2026-31544 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31544?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.