ghsa-j3xp-78w6-p4vh
Vulnerability from github
Published
2024-08-17 09:30
Modified
2025-11-04 00:31
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

btrfs: fix extent map use-after-free when adding pages to compressed bio

At add_ra_bio_pages() we are accessing the extent map to calculate 'add_size' after we dropped our reference on the extent map, resulting in a use-after-free. Fix this by computing 'add_size' before dropping our extent map reference.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-42314"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-17T09:15:11Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix extent map use-after-free when adding pages to compressed bio\n\nAt add_ra_bio_pages() we are accessing the extent map to calculate\n\u0027add_size\u0027 after we dropped our reference on the extent map, resulting\nin a use-after-free. Fix this by computing \u0027add_size\u0027 before dropping our\nextent map reference.",
  "id": "GHSA-j3xp-78w6-p4vh",
  "modified": "2025-11-04T00:31:14Z",
  "published": "2024-08-17T09:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42314"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e7860543a94784d744c7ce34b78a2e11beefa5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7859ff398b6b656e1689daa860eb34837b4bb89"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c1cc3326e27b0bd7a2806b40bc48e49afaf951e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c205565e0f2f439f278a4a94ee97b67ef7b56ae8"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "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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