CVE-2026-89817
Unknown
Description
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedSep 16, 2026
First seenSep 16, 2026
How to fix
Update
- Linux Linux08c8ec28547987e55a90c662f8795e05c2925498, 9096edfd6f2edbc79612b482547e0972edbcfe4b, 89210cb5ff8fdbe055c97ac688be2268f6c815ae, d0f3312f7800eb0e00d1264f66104c788f43dd69, b86438a5c6b0250ccb07dd380184d1e70e0dea6c, 6ea61f1d4cbaa0db937e31bffc041fb8afeacf52, 500cb24cd61bad8a2747ddfc49b7034899c82d94 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 ≤ v < 08c8ec28547987e55a90c662f8795e05c2925498, 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 ≤ v < 9096edfd6f2edbc79612b482547e0972edbcfe4b, 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 ≤ v < 89210cb5ff8fdbe055c97ac688be2268f6c815ae, 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 ≤ v < d0f3312f7800eb0e00d1264f66104c788f43dd69, 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 ≤ v < b86438a5c6b0250ccb07dd380184d1e70e0dea6c, 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 ≤ v < 6ea61f1d4cbaa0db937e31bffc041fb8afeacf52, 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 ≤ v < 500cb24cd61bad8a2747ddfc49b7034899c82d94, 5.13 | 08c8ec28547987e55a90c662f8795e05c2925498, 9096edfd6f2edbc79612b482547e0972edbcfe4b, 89210cb5ff8fdbe055c97ac688be2268f6c815ae, d0f3312f7800eb0e00d1264f66104c788f43dd69, b86438a5c6b0250ccb07dd380184d1e70e0dea6c, 6ea61f1d4cbaa0db937e31bffc041fb8afeacf52, 500cb24cd61bad8a2747ddfc49b7034899c82d94 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.