fkie_cve-2023-52444
Vulnerability from fkie_nvd
Published
2024-02-22 17:15
Modified
2024-11-21 08:39
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid dirent corruption As Al reported in link[1]: f2fs_rename() ... if (old_dir != new_dir && !whiteout) f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); else f2fs_put_page(old_dir_page, 0); You want correct inumber in the ".." link. And cross-directory rename does move the source to new parent, even if you'd been asked to leave a whiteout in the old place. [1] https://lore.kernel.org/all/20231017055040.GN800259@ZenIV/ With below testcase, it may cause dirent corruption, due to it missed to call f2fs_set_link() to update ".." link to new directory. - mkdir -p dir/foo - renameat2 -w dir/foo bar [ASSERT] (__chk_dots_dentries:1421) --> Bad inode number[0x4] for '..', parent parent ino is [0x3] [FSCK] other corrupted bugs [Fail]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02160112e6d45c2610b049df6eb693d7a2e57b46Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2fb4867f4405aea8c0519d7d188207f232a57862Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/53edb549565f55ccd0bdf43be3d66ce4c2d48b28Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5624a3c1b1ebc8991318e1cce2aa719542991024Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f866885e147d33efc497f1095f35b2ee5ec7310Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3c0b49aaa12a61d560528f5d605029ab57f0728Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f0145860c20be6bae6785c7a2249577674702ac7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f100ba617d8be6c98a68f3744ef7617082975b77Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/02160112e6d45c2610b049df6eb693d7a2e57b46Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2fb4867f4405aea8c0519d7d188207f232a57862Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/53edb549565f55ccd0bdf43be3d66ce4c2d48b28Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5624a3c1b1ebc8991318e1cce2aa719542991024Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6f866885e147d33efc497f1095f35b2ee5ec7310Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d3c0b49aaa12a61d560528f5d605029ab57f0728Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f0145860c20be6bae6785c7a2249577674702ac7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f100ba617d8be6c98a68f3744ef7617082975b77Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
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 *


To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid dirent corruption\n\nAs Al reported in link[1]:\n\nf2fs_rename()\n...\n\tif (old_dir != new_dir \u0026\u0026 !whiteout)\n\t\tf2fs_set_link(old_inode, old_dir_entry,\n\t\t\t\t\told_dir_page, new_dir);\n\telse\n\t\tf2fs_put_page(old_dir_page, 0);\n\nYou want correct inumber in the \"..\" link.  And cross-directory\nrename does move the source to new parent, even if you\u0027d been asked\nto leave a whiteout in the old place.\n\n[1] https://lore.kernel.org/all/20231017055040.GN800259@ZenIV/\n\nWith below testcase, it may cause dirent corruption, due to it missed\nto call f2fs_set_link() to update \"..\" link to new directory.\n- mkdir -p dir/foo\n- renameat2 -w dir/foo bar\n\n[ASSERT] (__chk_dots_dentries:1421)  --\u003e Bad inode number[0x4] for \u0027..\u0027, parent parent ino is [0x3]\n[FSCK] other corrupted bugs                           [Fail]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: correcci\u00f3n para evitar corrupci\u00f3n directa Como inform\u00f3 Al en link[1]: f2fs_rename() ... if (old_dir != new_dir \u0026amp;\u0026amp; !whiteout) f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); dem\u00e1s f2fs_put_page(old_dir_page, 0); Quiere el n\u00famero correcto en el enlace \"..\" Y el cambio de nombre entre directorios mueve la fuente al nuevo padre, incluso si le hubieran pedido que dejara un espacio en blanco en el lugar anterior. [1] https://lore.kernel.org/all/20231017055040.GN800259@ZenIV/ Con el siguiente caso de prueba, puede causar corrupci\u00f3n directa, debido a que no llam\u00f3 a f2fs_set_link() para actualizar el enlace \"..\" al nuevo directorio . - mkdir -p dir/foo - renameat2 -w dir/foo bar [ASSERT] (__chk_dots_dentries:1421) --\u0026gt; N\u00famero de inodo incorrecto [0x4] para \u0027..\u0027, el ino padre padre es [0x3] [FSCK] otro corrupto errores [falla]"
    }
  ],
  "id": "CVE-2023-52444",
  "lastModified": "2024-11-21T08:39:46.620",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2024-02-22T17:15:08.430",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
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          "value": "CWE-119"
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      "source": "nvd@nist.gov",
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    }
  ]
}


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