fkie_cve-2024-56586
Vulnerability from fkie_nvd
Published
2024-12-27 15:15
Modified
2025-11-03 21:18
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix f2fs_bug_on when uninstalling filesystem call f2fs_evict_inode. creating a large files during checkpoint disable until it runs out of space and then delete it, then remount to enable checkpoint again, and then unmount the filesystem triggers the f2fs_bug_on as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/inode.c:896! CPU: 2 UID: 0 PID: 1286 Comm: umount Not tainted 6.11.0-rc7-dirty #360 Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:f2fs_evict_inode+0x58c/0x610 Call Trace: __die_body+0x15/0x60 die+0x33/0x50 do_trap+0x10a/0x120 f2fs_evict_inode+0x58c/0x610 do_error_trap+0x60/0x80 f2fs_evict_inode+0x58c/0x610 exc_invalid_op+0x53/0x60 f2fs_evict_inode+0x58c/0x610 asm_exc_invalid_op+0x16/0x20 f2fs_evict_inode+0x58c/0x610 evict+0x101/0x260 dispose_list+0x30/0x50 evict_inodes+0x140/0x190 generic_shutdown_super+0x2f/0x150 kill_block_super+0x11/0x40 kill_f2fs_super+0x7d/0x140 deactivate_locked_super+0x2a/0x70 cleanup_mnt+0xb3/0x140 task_work_run+0x61/0x90 The root cause is: creating large files during disable checkpoint period results in not enough free segments, so when writing back root inode will failed in f2fs_enable_checkpoint. When umount the file system after enabling checkpoint, the root inode is dirty in f2fs_evict_inode function, which triggers BUG_ON. The steps to reproduce are as follows: dd if=/dev/zero of=f2fs.img bs=1M count=55 mount f2fs.img f2fs_dir -o checkpoint=disable:10% dd if=/dev/zero of=big bs=1M count=50 sync rm big mount -o remount,checkpoint=enable f2fs_dir umount f2fs_dir Let's redirty inode when there is not free segments during checkpoint is disable.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9669b28f81e0ec6305af7773846fbe2cef1e7d61Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9e28513fd2858911dcf47b84160a8824587536b6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a365de2fbfbe1e6740bfb75ab5c3245cf7bbe4d7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac8aaf78bd039fa1be0acaa8e84a56499f79d721Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d5c367ef8287fb4d235c46a2f8c8d68715f3a0caPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dff561e4060d28edc9a2960d4a87f3c945a96aa3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef517d2d21c3d8e2ad35b2bb728bd1c90a31e617Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "D18E43E2-2275-4F34-8E6C-D7BA1B863EA6",
              "versionEndExcluding": "5.4.287",
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix f2fs_bug_on when uninstalling filesystem call f2fs_evict_inode.\n\ncreating a large files during checkpoint disable until it runs out of\nspace and then delete it, then remount to enable checkpoint again, and\nthen unmount the filesystem triggers the f2fs_bug_on as below:\n\n------------[ cut here ]------------\nkernel BUG at fs/f2fs/inode.c:896!\nCPU: 2 UID: 0 PID: 1286 Comm: umount Not tainted 6.11.0-rc7-dirty #360\nOops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\nRIP: 0010:f2fs_evict_inode+0x58c/0x610\nCall Trace:\n __die_body+0x15/0x60\n die+0x33/0x50\n do_trap+0x10a/0x120\n f2fs_evict_inode+0x58c/0x610\n do_error_trap+0x60/0x80\n f2fs_evict_inode+0x58c/0x610\n exc_invalid_op+0x53/0x60\n f2fs_evict_inode+0x58c/0x610\n asm_exc_invalid_op+0x16/0x20\n f2fs_evict_inode+0x58c/0x610\n evict+0x101/0x260\n dispose_list+0x30/0x50\n evict_inodes+0x140/0x190\n generic_shutdown_super+0x2f/0x150\n kill_block_super+0x11/0x40\n kill_f2fs_super+0x7d/0x140\n deactivate_locked_super+0x2a/0x70\n cleanup_mnt+0xb3/0x140\n task_work_run+0x61/0x90\n\nThe root cause is: creating large files during disable checkpoint\nperiod results in not enough free segments, so when writing back root\ninode will failed in f2fs_enable_checkpoint. When umount the file\nsystem after enabling checkpoint, the root inode is dirty in\nf2fs_evict_inode function, which triggers BUG_ON. The steps to\nreproduce are as follows:\n\ndd if=/dev/zero of=f2fs.img bs=1M count=55\nmount f2fs.img f2fs_dir -o checkpoint=disable:10%\ndd if=/dev/zero of=big bs=1M count=50\nsync\nrm big\nmount -o remount,checkpoint=enable f2fs_dir\numount f2fs_dir\n\nLet\u0027s redirty inode when there is not free segments during checkpoint\nis disable."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: se corrige f2fs_bug_on al desinstalar el sistema de archivos, se llama f2fs_evict_inode. La creaci\u00f3n de archivos grandes durante el punto de control se desactiva hasta que se queda sin espacio y luego se elimina, luego se vuelve a montar para habilitar el punto de control nuevamente y luego se desmonta el sistema de archivos, lo que activa f2fs_bug_on como se muestra a continuaci\u00f3n: ------------[ cortar aqu\u00ed ]------------ \u00a1ERROR del kernel en fs/f2fs/inode.c:896! CPU: 2 UID: 0 PID: 1286 Comm: umount No contaminado 6.11.0-rc7-dirty #360 Oops: c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:f2fs_evict_inode+0x58c/0x610 Rastreo de llamadas: __die_body+0x15/0x60 die+0x33/0x50 do_trap+0x10a/0x120 f2fs_evict_inode+0x58c/0x610 do_error_trap+0x60/0x80 f2fs_evict_inode+0x58c/0x610 exc_invalid_op+0x53/0x60 f2fs_evict_inode+0x58c/0x610 La causa ra\u00edz es: crear archivos grandes durante el per\u00edodo del punto de control de deshabilitaci\u00f3n da como resultado que no haya suficientes segmentos libres, por lo que al volver a escribir el inodo ra\u00edz, fallar\u00e1 en f2fs_enable_checkpoint. Al desmontar el sistema de archivos despu\u00e9s de habilitar el punto de control, el inodo ra\u00edz est\u00e1 sucio en la funci\u00f3n f2fs_evict_inode, lo que activa BUG_ON. Los pasos para reproducir son los siguientes: dd if=/dev/zero of=f2fs.img bs=1M count=55 mount f2fs.img f2fs_dir -o checkpoint=disable:10% dd if=/dev/zero of=big bs=1M count=50 sync rm big mount -o remount,checkpoint=enable f2fs_dir umount f2fs_dir Vamos a volver a ensuciar el inodo cuando no haya segmentos libres mientras se deshabilita el punto de control."
    }
  ],
  "id": "CVE-2024-56586",
  "lastModified": "2025-11-03T21:18:00.180",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-12-27T15:15:17.800",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/9669b28f81e0ec6305af7773846fbe2cef1e7d61"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/9e28513fd2858911dcf47b84160a8824587536b6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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    },
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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