{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "db4d27e6bbbf511f9cdb33f682535a0a3cb7c403"
            },
            {
              "fixed": "dce13bd9bade3ecc1acb7579397f24743850997f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "31ba1a4d7a5d9466f6ef4910a372b8200f8aad19"
            },
            {
              "fixed": "252850653569fdb1a259937e02325cf32c8f0970"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "8f6f3aa21517ef34d50808af0c572e69580dca20"
            },
            {
              "fixed": "0259ade4c4ceaf1e184a7c1aea8071ad398f9b6f"
            },
            {
              "fixed": "55793e4665b7f15151e6f5ab51ca980e73abed5d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.12.64"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.18.4"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89885.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: platform: mtk-mdp3: Fix SCP device refcounting\n\nmdp_probe() first tries to get the SCP handle with scp_get(). When that\nfails, it falls back to looking up the SCP platform device with\n__get_pdev_by_id() and then reads its driver data.\n\nThe fallback lookup returns the platform device with a reference, just\nlike scp_get() does. However, the fallback path currently drops that\nreference immediately after platform_get_drvdata(). The driver later\nstill calls scp_put(mdp-\u003escp) unconditionally from the probe error path\nand from mdp_video_device_release(), which drops the SCP device\nreference again.\n\nKeep the fallback reference until the existing scp_put() call, so that\nthe fallback path follows the same ownership rules as the scp_get()\npath.",
  "id": "CVE-2026-89885",
  "modified": "2026-09-18T03:30:22.594210740Z",
  "published": "2026-09-16T10:31:49.746Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0259ade4c4ceaf1e184a7c1aea8071ad398f9b6f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/252850653569fdb1a259937e02325cf32c8f0970"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/55793e4665b7f15151e6f5ab51ca980e73abed5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dce13bd9bade3ecc1acb7579397f24743850997f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89885.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89885"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "media: platform: mtk-mdp3: Fix SCP device refcounting"
}