ghsa-m6f7-q6m8-788v
Vulnerability from github
Published
2022-05-14 02:03
Modified
2022-05-14 02:03
Severity ?
5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details

The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.

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{
  "affected": [],
  "aliases": [
    "CVE-2018-1095"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-04-02T03:29:00Z",
    "severity": "HIGH"
  },
  "details": "The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.",
  "id": "GHSA-m6f7-q6m8-788v",
  "modified": "2022-05-14T02:03:05Z",
  "published": "2022-05-14T02:03:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1095"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:2948"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2018-1095"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.kernel.org/show_bug.cgi?id=199185"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1560793"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=ce3fd194fcc6fbdc00ce095a852f22df97baa401"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3695-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3695-2"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2018/03/29/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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