CVE-2026-89817

In the Linux kernel, the following vulnerability has been resolved: drm/gud: NUL-terminate TV mode names read from the device gud_connector_add_tv_mode() reads a buffer of fixed-size mode names from the USB device and passes pointers into it to drm_mode_create_tv_properties_legacy(), which calls strlen() on each one. Nothing guarantees the device NUL-terminates a name, so strlen() can run past the end of a slot and, for the last mode, past the end of the allocation. Terminate each name at the end of its slot before use.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-25)

Published

2026-09-16

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/08c8ec28547987e55a90c662f8795e05c2925498
• https://git.kernel.org/stable/c/500cb24cd61bad8a2747ddfc49b7034899c82d94
• https://git.kernel.org/stable/c/6ea61f1d4cbaa0db937e31bffc041fb8afeacf52
• https://git.kernel.org/stable/c/89210cb5ff8fdbe055c97ac688be2268f6c815ae
• https://git.kernel.org/stable/c/9096edfd6f2edbc79612b482547e0972edbcfe4b

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