CVE-2024-35844 (GCVE-0-2024-35844)

Vulnerability from cvelistv5 – Published: 2024-05-17 14:40 – Updated: 2026-05-11 20:12
VLAI
Title
f2fs: compress: fix reserve_cblocks counting error when out of space
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: fix reserve_cblocks counting error when out of space When a file only needs one direct_node, performing the following operations will cause the file to be unrepairable: unisoc # ./f2fs_io compress test.apk unisoc #df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.2M 100% /data unisoc # ./f2fs_io release_cblocks test.apk 924 unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 4.8M 100% /data unisoc # dd if=/dev/random of=file4 bs=1M count=3 3145728 bytes (3.0 M) copied, 0.025 s, 120 M/s unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.8M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk F2FS_IOC_RESERVE_COMPRESS_BLOCKS failed: No space left on device adb reboot unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 11M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk 0 This is because the file has only one direct_node. After returning to -ENOSPC, reserved_blocks += ret will not be executed. As a result, the reserved_blocks at this time is still 0, which is not the real number of reserved blocks. Therefore, fsck cannot be set to repair the file. After this patch, the fsck flag will be set to fix this problem. unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.8M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk F2FS_IOC_RESERVE_COMPRESS_BLOCKS failed: No space left on device adb reboot then fsck will be executed unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 11M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk 924
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c75488fb4d82b697f381f855bf5b16779df440aa , < fa3ac8b1a227d9b470b87972494293348b5839ee (git)
Affected: c75488fb4d82b697f381f855bf5b16779df440aa , < 889846dfc8ee2cf31148a44bfd2faeb2faadc685 (git)
Affected: c75488fb4d82b697f381f855bf5b16779df440aa , < f0bf89e84c3afb79d7a3a9e4bc853ad6a3245c0a (git)
Affected: c75488fb4d82b697f381f855bf5b16779df440aa , < 569c198c9e2093fd29cc071856a4e548fda506bc (git)
Affected: c75488fb4d82b697f381f855bf5b16779df440aa , < fc0aed88afbf6f606205129a7466eebdf528e3f3 (git)
Affected: c75488fb4d82b697f381f855bf5b16779df440aa , < 2f6d721e14b69d6e1251f69fa238b48e8374e25f (git)
Create a notification for this product.
Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-35844\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-17T15:15:21.390\",\"lastModified\":\"2026-06-17T07:35:32.270\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: compress: fix reserve_cblocks counting error when out of space\\n\\nWhen a file only needs one direct_node, performing the following\\noperations will cause the file to be unrepairable:\\n\\nunisoc # ./f2fs_io compress test.apk\\nunisoc #df -h | grep dm-48\\n/dev/block/dm-48 112G 112G 1.2M 100% /data\\n\\nunisoc # ./f2fs_io release_cblocks test.apk\\n924\\nunisoc # df -h | grep dm-48\\n/dev/block/dm-48 112G 112G 4.8M 100% /data\\n\\nunisoc # dd if=/dev/random of=file4 bs=1M count=3\\n3145728 bytes (3.0 M) copied, 0.025 s, 120 M/s\\nunisoc # df -h | grep dm-48\\n/dev/block/dm-48 112G 112G 1.8M 100% /data\\n\\nunisoc # ./f2fs_io reserve_cblocks test.apk\\nF2FS_IOC_RESERVE_COMPRESS_BLOCKS failed: No space left on device\\n\\nadb reboot\\nunisoc # df -h  | grep dm-48\\n/dev/block/dm-48             112G 112G   11M 100% /data\\nunisoc # ./f2fs_io reserve_cblocks test.apk\\n0\\n\\nThis is because the file has only one direct_node. After returning\\nto -ENOSPC, reserved_blocks += ret will not be executed. As a result,\\nthe reserved_blocks at this time is still 0, which is not the real\\nnumber of reserved blocks. Therefore, fsck cannot be set to repair\\nthe file.\\n\\nAfter this patch, the fsck flag will be set to fix this problem.\\n\\nunisoc # df -h | grep dm-48\\n/dev/block/dm-48             112G 112G  1.8M 100% /data\\nunisoc # ./f2fs_io reserve_cblocks test.apk\\nF2FS_IOC_RESERVE_COMPRESS_BLOCKS failed: No space left on device\\n\\nadb reboot then fsck will be executed\\nunisoc # df -h  | grep dm-48\\n/dev/block/dm-48             112G 112G   11M 100% /data\\nunisoc # ./f2fs_io reserve_cblocks test.apk\\n924\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: compress: corrige el error de conteo de reserve_cblocks cuando no hay espacio. Cuando un archivo solo necesita un direct_node, realizar las siguientes operaciones har\u00e1 que el archivo no se pueda reparar: unisoc # ./f2fs_io compress test.apk unisoc #df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.2M 100% /data unisoc # ./f2fs_io release_cblocks test.apk 924 unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 4,8M 100% /data unisoc # dd if=/dev/random of=file4 bs=1M count=3 3145728 bytes (3,0 M) copiados, 0,025 s, 120 M/s unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.8M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk F2FS_IOC_RESERVE_COMPRESS_BLOCKS fall\u00f3: no queda espacio en el dispositivo adb reboot unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 11M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk 0 Esto se debe a que el archivo tiene solo un nodo_directo. Despu\u00e9s de regresar a -ENOSPC, reserve_blocks += ret no se ejecutar\u00e1. Como resultado, los bloques_reservados en este momento siguen siendo 0, que no es el n\u00famero real de bloques reservados. Por lo tanto, no se puede configurar fsck para reparar el archivo. Despu\u00e9s de este parche, se configurar\u00e1 el indicador fsck para solucionar este problema. unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.8M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk F2FS_IOC_RESERVE_COMPRESS_BLOCKS fall\u00f3: no queda espacio en el dispositivo y al reinicio del adb luego se ejecutar\u00e1 fsck unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 11M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T10:49:31+00:00",
      "cve": "CVE-2024-35844",
      "id": "CVE-2024-35844",
      "initial_release_date": "2024-05-17T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: f2fs: compress: fix reserve_cblocks counting error when out of space",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-35844.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-09-29T23:26:25Z",
      "cve": "CVE-2024-35844",
      "id": "CVE-2024-35844",
      "initial_release_date": "2024-05-21T01:59:54Z",
      "product_status:known_not_affected": "283",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-35844",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-35844.json",
      "version": "17"
    },
    "vulnrichment": {
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • 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.


Detection rules are retrieved from Rulezet.