{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f66e883eb6186bc43a79581b67aff7d1a69d0ff1"
            },
            {
              "fixed": "7e48afafe7abc275f7b6916613bb18b821e7d94a"
            },
            {
              "fixed": "0d9636ecba34bd553ecf19049f7705505aea62fd"
            },
            {
              "fixed": "4c02acbe0a2692ca9991c51e62bbe6d6b59dac31"
            },
            {
              "fixed": "779972513c2fa8c7938e54976f686091dafff22f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.26"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89609.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: hold msg ctx list lock when cleaning daemon queue\n\necryptfs_exorcise_daemon() drops queued messages from a dying daemon\nwithout holding ecryptfs_msg_ctx_lists_mux, but\necryptfs_msg_ctx_alloc_to_free() requires that lock.\n\nTake the list lock while moving the queued contexts back to the free\nlist to avoid racing with other global msg ctx list users.",
  "id": "CVE-2026-89609",
  "modified": "2026-09-13T03:30:24.300422432Z",
  "published": "2026-09-11T19:45:11.086Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d9636ecba34bd553ecf19049f7705505aea62fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c02acbe0a2692ca9991c51e62bbe6d6b59dac31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/779972513c2fa8c7938e54976f686091dafff22f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e48afafe7abc275f7b6916613bb18b821e7d94a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89609.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89609"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ecryptfs: hold msg ctx list lock when cleaning daemon queue"
}