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CVE-2026-89817

Estado: RecibidaSin puntuar—

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

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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