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CVE-2026-74618 binfmt_misc: don't warn when the mount is completed from another user namespace

🗓️ 22 Aug 2026 15:32:02Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 30 Views

Unprivileged WARN_ON in Linux binfmt_misc from cross-namespace mount enables kernel taint or panic.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/binfmt_misc.c"
    ],
    "versions": [
      {
        "version": "21ca59b365c091d583f36ac753eaa8baf947be6f",
        "lessThan": "37cf5cf1320a84a17225a1690547b8a0812ca94e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "21ca59b365c091d583f36ac753eaa8baf947be6f",
        "lessThan": "24e95a24f151ce40d5fc1b3a6cefbcda8ded736c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "21ca59b365c091d583f36ac753eaa8baf947be6f",
        "lessThan": "047f927f54c6c17593e93aafe82dcb7acdda2a71",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "21ca59b365c091d583f36ac753eaa8baf947be6f",
        "lessThan": "79fdf39f1a31f88cb3833b6f8091fbf6acdca2c6",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/binfmt_misc.c"
    ],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.7",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.104",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.45",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.9",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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