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GHSA-JWG7-7W82-9RVQ

Vulnerability from github – Published: 2022-05-17 03:56 – Updated: 2022-05-17 03:56
VLAI
Details

The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call.

Severity
5.5 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2015-4177"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2016-05-02T10:59:00Z",
    "severity": "MODERATE"
  },
  "details": "The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call.",
  "id": "GHSA-jwg7-7w82-9rvq",
  "modified": "2022-05-17T03:56:05Z",
  "published": "2022-05-17T03:56:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-4177"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/cd4a40174b71acd021877341684d8bb1dc8ea4ae"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1248486"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cd4a40174b71acd021877341684d8bb1dc8ea4ae"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2015/05/29/10"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2015/05/29/5"
    },
    {
      "type": "WEB",
      "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2015/06/04/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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