CVE-2026-93234 (GCVE-0-2026-93234)

Vulnerability from cvelistv5 – Published: 2026-09-24 15:33 – Updated: 2026-10-19 09:07
VLAI
Title
drm/gud: validate TV mode names before creating enum property
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/gud: validate TV mode names before creating enum property The GUD protocol returns TV mode names as fixed-size GUD_CONNECTOR_TV_MODE_NAME_LEN entries and requires each name to be NUL-terminated. gud_connector_add_tv_mode() currently passes each fixed-size entry directly to drm_mode_create_tv_properties_legacy(), which eventually reaches drm_property_add_enum() and strlen(). If a device returns an entry without a terminating NUL byte, strlen() reads past the end of the slot and can run beyond the allocated buffer, triggering an out-of-bounds read. Validate that each returned TV mode name contains a NUL terminator within its fixed-size slot before passing it to the DRM property code. If a malformed entry is found, reject the device response with -EIO. This fixes the out-of-bounds read without changing the handling of valid devices, and avoids silently truncating malformed protocol data.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6856 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 676f1fb3632bbc9ce83be7938e93fe6bfc9510fd (git)
Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 06fcaf21c18ac88f57fee3803554f48c6026b95f (git)
Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 082e378886547b5b1c4075ed307f7c68547868dc (git)
Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 70cffc31a380b3eae45027101647aa94c242aa0e (git)
Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < 72a95df6bbc7d20c7af1e39d86b3e910cccd01ad (git)
Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < eab46d9629807db1b5647d17227e16110a18227f (git)
Affected: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 , < da1ea35fea67ad841f4ada28dd61b41be65e5437 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.51 , ≤ 6.18.* (semver)
Unaffected: 7.2.5 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": "676f1fb3632bbc9ce83be7938e93fe6bfc9510fd",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "06fcaf21c18ac88f57fee3803554f48c6026b95f",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "082e378886547b5b1c4075ed307f7c68547868dc",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "70cffc31a380b3eae45027101647aa94c242aa0e",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "72a95df6bbc7d20c7af1e39d86b3e910cccd01ad",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "eab46d9629807db1b5647d17227e16110a18227f",
              "status": "affected",
              "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
              "versionType": "git"
            },
            {
              "lessThan": "da1ea35fea67ad841f4ada28dd61b41be65e5437",
              "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",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gud: validate TV mode names before creating enum property\n\nThe GUD protocol returns TV mode names as fixed-size\nGUD_CONNECTOR_TV_MODE_NAME_LEN entries and requires each name to be\nNUL-terminated.\n\ngud_connector_add_tv_mode() currently passes each fixed-size entry\ndirectly to drm_mode_create_tv_properties_legacy(), which eventually\nreaches drm_property_add_enum() and strlen(). If a device returns an\nentry without a terminating NUL byte, strlen() reads past the end of\nthe slot and can run beyond the allocated buffer, triggering an\nout-of-bounds read.\n\nValidate that each returned TV mode name contains a NUL terminator\nwithin its fixed-size slot before passing it to the DRM property code.\nIf a malformed entry is found, reject the device response with -EIO.\n\nThis fixes the out-of-bounds read without changing the handling of\nvalid devices, and avoids silently truncating malformed protocol data."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:07:45.893Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/676f1fb3632bbc9ce83be7938e93fe6bfc9510fd"
        },
        {
          "url": "https://git.kernel.org/stable/c/06fcaf21c18ac88f57fee3803554f48c6026b95f"
        },
        {
          "url": "https://git.kernel.org/stable/c/082e378886547b5b1c4075ed307f7c68547868dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/70cffc31a380b3eae45027101647aa94c242aa0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/72a95df6bbc7d20c7af1e39d86b3e910cccd01ad"
        },
        {
          "url": "https://git.kernel.org/stable/c/eab46d9629807db1b5647d17227e16110a18227f"
        },
        {
          "url": "https://git.kernel.org/stable/c/da1ea35fea67ad841f4ada28dd61b41be65e5437"
        }
      ],
      "title": "drm/gud: validate TV mode names before creating enum property",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93234",
    "datePublished": "2026-09-24T15:33:31.617Z",
    "dateReserved": "2026-09-17T16:02:15.095Z",
    "dateUpdated": "2026-10-19T09:07:45.893Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-93234",
      "date": "2026-10-21",
      "epss": "0.00205",
      "percentile": "0.10009"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-29T02:11:50.000Z",
      "cve": "CVE-2026-93234",
      "id": "msrc_CVE-2026-93234",
      "initial_release_date": "2026-09-28T03:59:51.000Z",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "drm/gud: validate TV mode names before creating enum property",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-93234.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
        "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": "676f1fb3632bbc9ce83be7938e93fe6bfc9510fd",
                    "status": "affected",
                    "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "06fcaf21c18ac88f57fee3803554f48c6026b95f",
                    "status": "affected",
                    "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "082e378886547b5b1c4075ed307f7c68547868dc",
                    "status": "affected",
                    "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "70cffc31a380b3eae45027101647aa94c242aa0e",
                    "status": "affected",
                    "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "72a95df6bbc7d20c7af1e39d86b3e910cccd01ad",
                    "status": "affected",
                    "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "eab46d9629807db1b5647d17227e16110a18227f",
                    "status": "affected",
                    "version": "40e1a70b4aedf2859a1829991b48ef0ebe650bf2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "da1ea35fea67ad841f4ada28dd61b41be65e5437",
                    "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",
                    "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: validate TV mode names before creating enum property\n\nThe GUD protocol returns TV mode names as fixed-size\nGUD_CONNECTOR_TV_MODE_NAME_LEN entries and requires each name to be\nNUL-terminated.\n\ngud_connector_add_tv_mode() currently passes each fixed-size entry\ndirectly to drm_mode_create_tv_properties_legacy(), which eventually\nreaches drm_property_add_enum() and strlen(). If a device returns an\nentry without a terminating NUL byte, strlen() reads past the end of\nthe slot and can run beyond the allocated buffer, triggering an\nout-of-bounds read.\n\nValidate that each returned TV mode name contains a NUL terminator\nwithin its fixed-size slot before passing it to the DRM property code.\nIf a malformed entry is found, reject the device response with -EIO.\n\nThis fixes the out-of-bounds read without changing the handling of\nvalid devices, and avoids silently truncating malformed protocol data."
          }
        ],
        "id": "CVE-2026-93234",
        "lastModified": "2026-10-19T10:17:14.443",
        "metrics": {},
        "published": "2026-09-24T16:17:19.007",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/06fcaf21c18ac88f57fee3803554f48c6026b95f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/082e378886547b5b1c4075ed307f7c68547868dc"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/676f1fb3632bbc9ce83be7938e93fe6bfc9510fd"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/70cffc31a380b3eae45027101647aa94c242aa0e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/72a95df6bbc7d20c7af1e39d86b3e910cccd01ad"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/da1ea35fea67ad841f4ada28dd61b41be65e5437"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/eab46d9629807db1b5647d17227e16110a18227f"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-20T17:47:34+00:00",
      "cve": "CVE-2026-93234",
      "id": "CVE-2026-93234",
      "initial_release_date": "2026-09-24T00:00:00+00:00",
      "product_status:known_affected": "186",
      "product_status:known_not_affected": "91",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/gud: validate TV mode names before creating enum property",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93234.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-20T00:21:44Z",
      "cve": "CVE-2026-93234",
      "id": "CVE-2026-93234",
      "initial_release_date": "2026-09-24T23:49:31Z",
      "product_status:known_affected": "126",
      "product_status:known_not_affected": "222",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93234",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-93234.json",
      "version": "4"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.