CVE-2026-89817 (GCVE-0-2026-89817)
Vulnerability from cvelistv5
Published
2026-09-16 10:30
Modified
2026-10-19 08:53
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
Version: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
Version: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
Version: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
Version: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
Version: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
Version: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
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{
  "containers": {
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          "programFiles": [
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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          "nodes": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gud: NUL-terminate TV mode names read from the device\n\ngud_connector_add_tv_mode() reads a buffer of fixed-size mode names from\nthe USB device and passes pointers into it to\ndrm_mode_create_tv_properties_legacy(), which calls strlen() on each one.\nNothing guarantees the device NUL-terminates a name, so strlen() can run\npast the end of a slot and, for the last mode, past the end of the\nallocation.\n\nTerminate each name at the end of its slot before use."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:53:11.379Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/08c8ec28547987e55a90c662f8795e05c2925498"
        },
        {
          "url": "https://git.kernel.org/stable/c/9096edfd6f2edbc79612b482547e0972edbcfe4b"
        },
        {
          "url": "https://git.kernel.org/stable/c/89210cb5ff8fdbe055c97ac688be2268f6c815ae"
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          "url": "https://git.kernel.org/stable/c/d0f3312f7800eb0e00d1264f66104c788f43dd69"
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          "url": "https://git.kernel.org/stable/c/6ea61f1d4cbaa0db937e31bffc041fb8afeacf52"
        },
        {
          "url": "https://git.kernel.org/stable/c/500cb24cd61bad8a2747ddfc49b7034899c82d94"
        }
      ],
      "title": "drm/gud: NUL-terminate TV mode names read from the device",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89817",
    "datePublished": "2026-09-16T10:30:49.977Z",
    "dateReserved": "2026-09-11T19:38:34.768Z",
    "dateUpdated": "2026-10-19T08:53:11.379Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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