GHSA-G57W-MH9M-GP2M

Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 12:30
VLAI
Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89817"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:16:46Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-g57w-mh9m-gp2m",
  "modified": "2026-09-16T12:30:37Z",
  "published": "2026-09-16T12:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89817"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08c8ec28547987e55a90c662f8795e05c2925498"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/500cb24cd61bad8a2747ddfc49b7034899c82d94"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ea61f1d4cbaa0db937e31bffc041fb8afeacf52"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89210cb5ff8fdbe055c97ac688be2268f6c815ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9096edfd6f2edbc79612b482547e0972edbcfe4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b86438a5c6b0250ccb07dd380184d1e70e0dea6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0f3312f7800eb0e00d1264f66104c788f43dd69"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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