FKIE_CVE-2026-89817

Vulnerability from fkie_nvd - Published: 2026-09-16 11:16 - Updated: 2026-09-16 11:16
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/08c8ec28547987e55a90c662f8795e05c2925498
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/500cb24cd61bad8a2747ddfc49b7034899c82d94
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ea61f1d4cbaa0db937e31bffc041fb8afeacf52
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/89210cb5ff8fdbe055c97ac688be2268f6c815ae
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9096edfd6f2edbc79612b482547e0972edbcfe4b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b86438a5c6b0250ccb07dd380184d1e70e0dea6c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d0f3312f7800eb0e00d1264f66104c788f43dd69
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/gud/gud_connector.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "08c8ec28547987e55a90c662f8795e05c2925498",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "9096edfd6f2edbc79612b482547e0972edbcfe4b",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "89210cb5ff8fdbe055c97ac688be2268f6c815ae",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "d0f3312f7800eb0e00d1264f66104c788f43dd69",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "b86438a5c6b0250ccb07dd380184d1e70e0dea6c",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "6ea61f1d4cbaa0db937e31bffc041fb8afeacf52",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "500cb24cd61bad8a2747ddfc49b7034899c82d94",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/gud/gud_connector.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-89817",
  "lastModified": "2026-09-16T11:16:46.990",
  "metrics": {},
  "published": "2026-09-16T11:16:46.990",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/08c8ec28547987e55a90c662f8795e05c2925498"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/500cb24cd61bad8a2747ddfc49b7034899c82d94"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6ea61f1d4cbaa0db937e31bffc041fb8afeacf52"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/89210cb5ff8fdbe055c97ac688be2268f6c815ae"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9096edfd6f2edbc79612b482547e0972edbcfe4b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b86438a5c6b0250ccb07dd380184d1e70e0dea6c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d0f3312f7800eb0e00d1264f66104c788f43dd69"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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