GHSA-78X5-GG4G-8MMW

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30
VLAI?
Details

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

ext4: fix deadlock when converting an inline directory in nojournal mode

In no journal mode, ext4_finish_convert_inline_dir() can self-deadlock by calling ext4_handle_dirty_dirblock() when it already has taken the directory lock. There is a similar self-deadlock in ext4_incvert_inline_data_nolock() for data files which we'll fix at the same time.

A simple reproducer demonstrating the problem:

mke2fs -Fq -t ext2 -O inline_data -b 4k /dev/vdc 64
mount -t ext4 -o dirsync /dev/vdc /vdc
cd /vdc
mkdir file0
cd file0
touch file0
touch file1
attr -s BurnSpaceInEA -V abcde .
touch supercalifragilisticexpialidocious
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{
  "affected": [],
  "aliases": [
    "CVE-2023-54311"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:16:20Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix deadlock when converting an inline directory in nojournal mode\n\nIn no journal mode, ext4_finish_convert_inline_dir() can self-deadlock\nby calling ext4_handle_dirty_dirblock() when it already has taken the\ndirectory lock.  There is a similar self-deadlock in\next4_incvert_inline_data_nolock() for data files which we\u0027ll fix at\nthe same time.\n\nA simple reproducer demonstrating the problem:\n\n    mke2fs -Fq -t ext2 -O inline_data -b 4k /dev/vdc 64\n    mount -t ext4 -o dirsync /dev/vdc /vdc\n    cd /vdc\n    mkdir file0\n    cd file0\n    touch file0\n    touch file1\n    attr -s BurnSpaceInEA -V abcde .\n    touch supercalifragilisticexpialidocious",
  "id": "GHSA-78x5-gg4g-8mmw",
  "modified": "2025-12-30T15:30:35Z",
  "published": "2025-12-30T15:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54311"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b1c4357bb21d9770451a1bdb8d419ea10bada88"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f8b55136ad787aed2c184f7cb3e93772ae637a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/640c8c365999c6f23447ac766437236ad88317c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/665cc3ba50330049524c1d275bc840a8f28dde73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/804de0c72cd473e186ca4e1f6287d45431b14e5a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4fa4768c9acff77245d672d855d2c88294850b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4ce24f54d9cca4f09a395f3eecce20d6bec4663"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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