FKIE_CVE-2022-49343

Vulnerability from fkie_nvd - Published: 2025-02-26 07:01 - Updated: 2025-10-21 12:18
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: ext4: avoid cycles in directory h-tree A maliciously corrupted filesystem can contain cycles in the h-tree stored inside a directory. That can easily lead to the kernel corrupting tree nodes that were already verified under its hands while doing a node split and consequently accessing unallocated memory. Fix the problem by verifying traversed block numbers are unique.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24b8206fec1db21d7e82f21f0b2ff5e5672cf5b3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a3ce941645407cd0b0b7f01ad9e2ea3770f46ccPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ba733f879c2a88910744647e41edeefbc0d92b2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6084240bfc44bf265ab6ae7d96980469b05be0f1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b3ad9ff6f06c1dc6abf7437691c88ca3d6da3ac0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d5a16a6df2c16eaf4de04948553ef0089dee463fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e157c8f87e8fac112d6c955e69a60cdb9bc80a60Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff4cafa51762da3824881a9000ca421d4b78b138Patch
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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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: evitar ciclos en el directorio h-tree Un sistema de archivos da\u00f1ado maliciosamente puede contener ciclos en el h-tree almacenados dentro de un directorio. Eso puede hacer que el kernel corrompa f\u00e1cilmente los nodos del \u00e1rbol que ya se hab\u00edan verificado bajo su control mientras realizaba una divisi\u00f3n de nodos y, en consecuencia, accediera a memoria no asignada. Solucione el problema verificando que los n\u00fameros de bloque recorridos sean \u00fanicos."
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  "id": "CVE-2022-49343",
  "lastModified": "2025-10-21T12:18:01.940",
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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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.
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