{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "daa0437fe5e451856aaf8fda602a9fc2105bbd54",
              "status": "affected",
              "version": "f04d275d94e164d24516c32437c988a323018f63",
              "versionType": "git"
            },
            {
              "lessThan": "217f64f348c90cba62164e7ff38e0ccf78a5ca09",
              "status": "affected",
              "version": "f04d275d94e164d24516c32437c988a323018f63",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "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": "7.2.10",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: guard dc_sink dereferences in MST mode validation\n\ndm_dp_mst_is_port_support_mode() reads\naconnector-\u003edc_sink-\u003edsc_caps... for the DSC branch-throughput check,\nand get_conv_frl_bw()\u0027s HDMI-PCON FRL-bandwidth path reads\naconnector-\u003edc_sink-\u003eedid_caps.max_frl_rate, both without a NULL\ncheck. dc_sink is cleared asynchronously on MST unplug, and both\nfunctions run from paths that the driver\u0027s own comments document as\nracing that teardown: the connector probe worker\u0027s -\u003emode_valid\ncallback and a compositor\u0027s atomic check, neither of which holds the\nMST manager lock that the teardown path uses. The former does have an\nexisting dsc_aux NULL check, but dsc_aux isn\u0027t reliably cleared in\nevery path that clears dc_sink, so it doesn\u0027t cover this.\n\nFail the port-support check and skip the FRL conversion path when the\nsink is already gone.\n\n(cherry picked from commit 7c3db8da4e039698ae198c870712428644e965c7)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:25:39.296Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/daa0437fe5e451856aaf8fda602a9fc2105bbd54"
        },
        {
          "url": "https://git.kernel.org/stable/c/217f64f348c90cba62164e7ff38e0ccf78a5ca09"
        }
      ],
      "title": "drm/amd/display: guard dc_sink dereferences in MST mode validation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98786",
    "datePublished": "2026-10-18T15:48:22.989Z",
    "dateReserved": "2026-09-25T10:25:14.370Z",
    "dateUpdated": "2026-10-19T09:25:39.296Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}