{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "54618888d1ea7a26f8bccfb89e3c2420350c8047"
            },
            {
              "fixed": "f9922828a4ebd26286fbe0286cc61695e7d9b07b"
            },
            {
              "fixed": "a59e493567d18ef3858be9368acd132a01ebfa09"
            },
            {
              "fixed": "4ee77643e6194f2deb62fe62f04396f9825e27d8"
            },
            {
              "fixed": "58ea24dd96848626039296e9e8510270ec8dc4bf"
            },
            {
              "fixed": "a6e14b976be48eebd8769cb5b883a6af7fc5ade1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.3.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68256.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference\n\nprev_sink is unconditionally retained via dc_sink_retain at function\n  entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT\n  returns false without releasing prev_sink. All other return paths in the\n  function correctly call dc_sink_release(prev_sink), making this the only\n  missing cleanup.\n\n(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)",
  "id": "CVE-2026-68256",
  "modified": "2026-08-18T03:31:17.969712295Z",
  "published": "2026-08-10T12:01:26.406Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68256.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68256"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference"
}