{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "98fc6c7b6ca676157d2c780bd0a537b2c10fe08f",
              "status": "affected",
              "version": "0e5032237ee5530147fbdf33134297e1490d5ec3",
              "versionType": "git"
            },
            {
              "lessThan": "bb46094057520304073130920c223451c2a694a7",
              "status": "affected",
              "version": "0e5032237ee5530147fbdf33134297e1490d5ec3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "lessThan": "7.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.11",
              "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": "7.2.11",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstatmount: read the parent of an unmounted mount under mount_lock\n\nstatmount_mnt_basic() reads the ids of the parent through m-\u003emnt_parent\nwith namespace_sem held for reading. That\u0027s fine for a mount that is\nin a namespace. Everything above it is pinned by that namespace.\n\nSTATMOUNT_BY_FD also accepts a file descriptor on a mount that has\nbeen unmounted on purpose and that only the file descriptor keeps alive.\nIf that mount stayed attached to its parent when it was unmounted the\nparent is unmounted as well and nothing pins it for the child.\n\nThe final mntput() unmounts the children under mount_lock alone and\nfrees the parent afterwards. Concurrently, statmount_mnt_basic() reads\nm-\u003emnt_parent twice while that can happen and can easily dereference a\nmount that\u0027s already gone.\n\nRead the parent of an unmounted mount under mount_lock. The parent\ncan\u0027t be put while it is held and both ids come from the same mount. A\nmounted mount\u0027s parent is pinned by the namespace and a mount can\u0027t\nleave its namespace while namespace_sem is held, so the common case\ntakes no global lock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-23T12:20:13.244Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/98fc6c7b6ca676157d2c780bd0a537b2c10fe08f"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb46094057520304073130920c223451c2a694a7"
        }
      ],
      "title": "statmount: read the parent of an unmounted mount under mount_lock",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98994",
    "datePublished": "2026-10-23T12:20:13.244Z",
    "dateReserved": "2026-09-25T10:25:14.384Z",
    "dateUpdated": "2026-10-23T12:20:13.244Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}