ghsa-ghqh-9ppg-g8cf
Vulnerability from github
Published
2025-05-02 18:31
Modified
2025-05-02 18:31
Details

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

ext4: update s_journal_inum if it changes after journal replay

When mounting a crafted ext4 image, s_journal_inum may change after journal replay, which is obviously unreasonable because we have successfully loaded and replayed the journal through the old s_journal_inum. And the new s_journal_inum bypasses some of the checks in ext4_get_journal(), which may trigger a null pointer dereference problem. So if s_journal_inum changes after the journal replay, we ignore the change, and rewrite the current journal_inum to the superblock.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53091"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-02T16:15:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: update s_journal_inum if it changes after journal replay\n\nWhen mounting a crafted ext4 image, s_journal_inum may change after journal\nreplay, which is obviously unreasonable because we have successfully loaded\nand replayed the journal through the old s_journal_inum. And the new\ns_journal_inum bypasses some of the checks in ext4_get_journal(), which\nmay trigger a null pointer dereference problem. So if s_journal_inum\nchanges after the journal replay, we ignore the change, and rewrite the\ncurrent journal_inum to the superblock.",
  "id": "GHSA-ghqh-9ppg-g8cf",
  "modified": "2025-05-02T18:31:35Z",
  "published": "2025-05-02T18:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53091"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3039d8b8692408438a618fac2776b629852663c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/499fef2030fb754c68b1c7cb3a799a3bc1d0d925"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70e66bdeae4d0f7c8e87762f425b68aedd5e8955"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee0c5277d4fab920bd31345c49e193ecede9ecef"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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