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GHSA-592Q-R679-2JPC

Vulnerability from github – Published: 2025-03-27 18:31 – Updated: 2025-04-15 15:30
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

squashfs: harden sanity check in squashfs_read_xattr_id_table

While mounting a corrupted filesystem, a signed integer '*xattr_ids' can become less than zero. This leads to the incorrect computation of 'len' and 'indexes' values which can cause null-ptr-deref in copy_bio_to_actor() or out-of-bounds accesses in the next sanity checks inside squashfs_read_xattr_id_table().

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Severity
5.5 (Medium)
CVSS:3.1/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-2023-52979"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:45Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsquashfs: harden sanity check in squashfs_read_xattr_id_table\n\nWhile mounting a corrupted filesystem, a signed integer \u0027*xattr_ids\u0027 can\nbecome less than zero.  This leads to the incorrect computation of \u0027len\u0027\nand \u0027indexes\u0027 values which can cause null-ptr-deref in copy_bio_to_actor()\nor out-of-bounds accesses in the next sanity checks inside\nsquashfs_read_xattr_id_table().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.",
  "id": "GHSA-592q-r679-2jpc",
  "modified": "2025-04-15T15:30:48Z",
  "published": "2025-03-27T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52979"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29e774dcb27116c06b9c57b1f1f14a1623738989"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72e544b1b28325fe78a4687b980871a7e4101f76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b30a74f83265c24d1d0842c6c3928cd2e775a3fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7398efe24a965cf3937b716c0b1011c201c5d6e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf5d6612092408157db6bb500c70bf6d67c40fbc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db76fc535fbdfbf29fd0b93e49627537ad794c8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de2785aa3448d1ee7be3ab47fd4a873025f1b3d7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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