GHSA-GVGR-4FPH-M6HC

Vulnerability from github – Published: 2022-08-25 00:00 – Updated: 2026-08-10 18:31
VLAI
Details

A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create files for the XFS file-system with an unintended group ownership and with group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a certain group and is writable by a user who is not a member of this group. This can lead to excessive permissions granted in case when they should not. This vulnerability is similar to the previous CVE-2018-13405 and adds the missed fix for the XFS.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2021-4037"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-08-24T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create files for the XFS file-system with an unintended group ownership and with group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a certain group and is writable by a user who is not a member of this group. This can lead to excessive permissions granted in case when they should not. This vulnerability is similar to the previous CVE-2018-13405 and adds the missed fix for the XFS.",
  "id": "GHSA-gvgr-4fph-m6hc",
  "modified": "2026-08-10T18:31:13Z",
  "published": "2022-08-25T00:00:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4037"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:1975"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:1988"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:4829"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:4835"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2021-4037"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2004810"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2027239"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=01ea173e103e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0fa3ecd87848"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5257"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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