fkie_cve-2023-53101
Vulnerability from fkie_nvd
Published
2025-05-02 16:15
Modified
2025-11-10 17:56
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: ext4: zero i_disksize when initializing the bootloader inode If the boot loader inode has never been used before, the EXT4_IOC_SWAP_BOOT inode will initialize it, including setting the i_size to 0. However, if the "never before used" boot loader has a non-zero i_size, then i_disksize will be non-zero, and the inconsistency between i_size and i_disksize can trigger a kernel warning: WARNING: CPU: 0 PID: 2580 at fs/ext4/file.c:319 CPU: 0 PID: 2580 Comm: bb Not tainted 6.3.0-rc1-00004-g703695902cfa RIP: 0010:ext4_file_write_iter+0xbc7/0xd10 Call Trace: vfs_write+0x3b1/0x5c0 ksys_write+0x77/0x160 __x64_sys_write+0x22/0x30 do_syscall_64+0x39/0x80 Reproducer: 1. create corrupted image and mount it: mke2fs -t ext4 /tmp/foo.img 200 debugfs -wR "sif <5> size 25700" /tmp/foo.img mount -t ext4 /tmp/foo.img /mnt cd /mnt echo 123 > file 2. Run the reproducer program: posix_memalign(&buf, 1024, 1024) fd = open("file", O_RDWR | O_DIRECT); ioctl(fd, EXT4_IOC_SWAP_BOOT); write(fd, buf, 1024); Fix this by setting i_disksize as well as i_size to zero when initiaizing the boot loader inode.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01a821aacc64d4b05dafd239dbc9b7856686002fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d8a6c9a6415999fee1259ccf1796480c026b7d6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f00c476da8fe7c4c34ea16abb55d74127120413Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59eee0cdf8c036f554add97a4da7c06d7a9ff34aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9cb27b1e76f0cc886ac09055bc41c0ab3f205167Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9e9a4cc5486356158554f6ad73027d8635a48b34Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d6c1447e483c05dbcfb3ff77ac04237a82070b8cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f5361da1e60d54ec81346aee8e3d8baf1be0b762Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.3


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0F12E8D5-1637-41E0-AE6C-30FB1DEC6D77",
              "versionEndExcluding": "4.14.310",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1BE5A05F-B15B-4F08-BCE4-7DF115602DC3",
              "versionEndExcluding": "4.19.278",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "229D3E63-7A14-4507-9222-7E4821F6FF3F",
              "versionEndExcluding": "5.4.237",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BEA15466-227B-46FF-B5A8-1E8679056A83",
              "versionEndExcluding": "5.10.175",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7A57CCEF-C453-48CE-9A6E-71A03C369F61",
              "versionEndExcluding": "5.15.103",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B22D8949-72A1-4CED-8318-A040635DEEBE",
              "versionEndExcluding": "6.1.20",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EFEDDF17-189C-4901-BD6B-41752E80AAA4",
              "versionEndExcluding": "6.2.7",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "B8E3B0E8-FA27-4305-87BB-AF6C25B160CB",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: zero i_disksize when initializing the bootloader inode\n\nIf the boot loader inode has never been used before, the\nEXT4_IOC_SWAP_BOOT inode will initialize it, including setting the\ni_size to 0.  However, if the \"never before used\" boot loader has a\nnon-zero i_size, then i_disksize will be non-zero, and the\ninconsistency between i_size and i_disksize can trigger a kernel\nwarning:\n\n WARNING: CPU: 0 PID: 2580 at fs/ext4/file.c:319\n CPU: 0 PID: 2580 Comm: bb Not tainted 6.3.0-rc1-00004-g703695902cfa\n RIP: 0010:ext4_file_write_iter+0xbc7/0xd10\n Call Trace:\n  vfs_write+0x3b1/0x5c0\n  ksys_write+0x77/0x160\n  __x64_sys_write+0x22/0x30\n  do_syscall_64+0x39/0x80\n\nReproducer:\n 1. create corrupted image and mount it:\n       mke2fs -t ext4 /tmp/foo.img 200\n       debugfs -wR \"sif \u003c5\u003e size 25700\" /tmp/foo.img\n       mount -t ext4 /tmp/foo.img /mnt\n       cd /mnt\n       echo 123 \u003e file\n 2. Run the reproducer program:\n       posix_memalign(\u0026buf, 1024, 1024)\n       fd = open(\"file\", O_RDWR | O_DIRECT);\n       ioctl(fd, EXT4_IOC_SWAP_BOOT);\n       write(fd, buf, 1024);\n\nFix this by setting i_disksize as well as i_size to zero when\ninitiaizing the boot loader inode."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: i_disksize cero al inicializar el inodo del cargador de arranque. Si el inodo del cargador de arranque nunca se ha usado antes, el inodo EXT4_IOC_SWAP_BOOT lo inicializar\u00e1, incluyendo el establecimiento de i_size a 0. Sin embargo, si el cargador de arranque \"nunca usado antes\" tiene un i_size distinto de cero, entonces i_disksize ser\u00e1 distinto de cero, y la inconsistencia entre i_size e i_disksize puede activar una advertencia del kernel: ADVERTENCIA: CPU: 0 PID: 2580 en fs/ext4/file.c:319 CPU: 0 PID: 2580 Comm: bb No contaminado 6.3.0-rc1-00004-g703695902cfa RIP: 0010:ext4_file_write_iter+0xbc7/0xd10 Rastreo de llamadas: vfs_write+0x3b1/0x5c0 ksys_write+0x77/0x160 __x64_sys_write+0x22/0x30 do_syscall_64+0x39/0x80 Reproductor: 1. crear una imagen da\u00f1ada y montarla: mke2fs -t ext4 /tmp/foo.img 200 debugfs -wR \"sif \u0026lt;5\u0026gt; size 25700\" /tmp/foo.img mount -t ext4 /tmp/foo.img /mnt cd /mnt echo 123 \u0026gt; file 2. Ejecutar el programa reproductor: posix_memalign(\u0026amp;buf, 1024, 1024) fd = open(\"file\", O_RDWR | Solucione esto configurando i_disksize e i_size en cero al iniciar el inodo del cargador de arranque."
    }
  ],
  "id": "CVE-2023-53101",
  "lastModified": "2025-11-10T17:56:32.930",
  "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": "2025-05-02T16:15:29.023",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/01a821aacc64d4b05dafd239dbc9b7856686002f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0d8a6c9a6415999fee1259ccf1796480c026b7d6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3f00c476da8fe7c4c34ea16abb55d74127120413"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/59eee0cdf8c036f554add97a4da7c06d7a9ff34a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9cb27b1e76f0cc886ac09055bc41c0ab3f205167"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9e9a4cc5486356158554f6ad73027d8635a48b34"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d6c1447e483c05dbcfb3ff77ac04237a82070b8c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f5361da1e60d54ec81346aee8e3d8baf1be0b762"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.