CVE-2026-89817drm/gud: NUL-terminate TV mode names read from the device
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 builds before 08c8ec28547987e55a90c662f8795e05c2925498; from 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 before 9096edfd6f2edbc79612b482547e0972edbcfe4b; from 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 before 89210cb5ff8fdbe055c97ac688be2268f6c815ae; from 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 before d0f3312f7800eb0e00d1264f66104c788f43dd69; from 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 before b86438a5c6b0250ccb07dd380184d1e70e0dea6c; 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 builds before 6ea61f1d4cbaa0db937e31bffc041fb8afeacf52; from 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 before 500cb24cd61bad8a2747ddfc49b7034899c82d94 | CNA record |
References
- https://git.kernel.org/stable/c/08c8ec28547987e55a90c662f8795e05c2925498
- https://git.kernel.org/stable/c/9096edfd6f2edbc79612b482547e0972edbcfe4b
- https://git.kernel.org/stable/c/89210cb5ff8fdbe055c97ac688be2268f6c815ae
- https://git.kernel.org/stable/c/d0f3312f7800eb0e00d1264f66104c788f43dd69
- https://git.kernel.org/stable/c/b86438a5c6b0250ccb07dd380184d1e70e0dea6c
- https://git.kernel.org/stable/c/6ea61f1d4cbaa0db937e31bffc041fb8afeacf52
- https://git.kernel.org/stable/c/500cb24cd61bad8a2747ddfc49b7034899c82d94
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.