CVE-2023-54311 (GCVE-0-2023-54311)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:23 – Updated: 2026-01-05 11:37
VLAI?
Title
ext4: fix deadlock when converting an inline directory in nojournal mode
Summary
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
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3c47d54170b6a678875566b1b8d6dcf57904e49b , < b4fa4768c9acff77245d672d855d2c88294850b1 (git)
Affected: 3c47d54170b6a678875566b1b8d6dcf57904e49b , < 5f8b55136ad787aed2c184f7cb3e93772ae637a3 (git)
Affected: 3c47d54170b6a678875566b1b8d6dcf57904e49b , < 640c8c365999c6f23447ac766437236ad88317c5 (git)
Affected: 3c47d54170b6a678875566b1b8d6dcf57904e49b , < 665cc3ba50330049524c1d275bc840a8f28dde73 (git)
Affected: 3c47d54170b6a678875566b1b8d6dcf57904e49b , < 0b1c4357bb21d9770451a1bdb8d419ea10bada88 (git)
Affected: 3c47d54170b6a678875566b1b8d6dcf57904e49b , < 804de0c72cd473e186ca4e1f6287d45431b14e5a (git)
Affected: 3c47d54170b6a678875566b1b8d6dcf57904e49b , < f4ce24f54d9cca4f09a395f3eecce20d6bec4663 (git)
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    Linux Linux Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 5.4.243 , ≤ 5.4.* (semver)
Unaffected: 5.10.180 , ≤ 5.10.* (semver)
Unaffected: 5.15.112 , ≤ 5.15.* (semver)
Unaffected: 6.1.29 , ≤ 6.1.* (semver)
Unaffected: 6.2.16 , ≤ 6.2.* (semver)
Unaffected: 6.3.3 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
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{
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/inline.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "5.15.112",
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              "version": "6.4",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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      "descriptions": [
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          "lang": "en",
          "value": "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"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T11:37:22.439Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b4fa4768c9acff77245d672d855d2c88294850b1"
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          "url": "https://git.kernel.org/stable/c/5f8b55136ad787aed2c184f7cb3e93772ae637a3"
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        },
        {
          "url": "https://git.kernel.org/stable/c/f4ce24f54d9cca4f09a395f3eecce20d6bec4663"
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      "title": "ext4: fix deadlock when converting an inline directory in nojournal mode",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54311",
    "datePublished": "2025-12-30T12:23:43.174Z",
    "dateReserved": "2025-12-30T12:06:44.530Z",
    "dateUpdated": "2026-01-05T11:37:22.439Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54311\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:20.317\",\"lastModified\":\"2025-12-31T20:42:43.210\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0b1c4357bb21d9770451a1bdb8d419ea10bada88\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5f8b55136ad787aed2c184f7cb3e93772ae637a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/640c8c365999c6f23447ac766437236ad88317c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/665cc3ba50330049524c1d275bc840a8f28dde73\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/804de0c72cd473e186ca4e1f6287d45431b14e5a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b4fa4768c9acff77245d672d855d2c88294850b1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f4ce24f54d9cca4f09a395f3eecce20d6bec4663\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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