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CVE-2022-49762 (GCVE-0-2022-49762)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-05-11 19:06
VLAI
Title
ntfs: check overflow when iterating ATTR_RECORDs
Summary
In the Linux kernel, the following vulnerability has been resolved: ntfs: check overflow when iterating ATTR_RECORDs Kernel iterates over ATTR_RECORDs in mft record in ntfs_attr_find(). Because the ATTR_RECORDs are next to each other, kernel can get the next ATTR_RECORD from end address of current ATTR_RECORD, through current ATTR_RECORD length field. The problem is that during iteration, when kernel calculates the end address of current ATTR_RECORD, kernel may trigger an integer overflow bug in executing `a = (ATTR_RECORD*)((u8*)a + le32_to_cpu(a->length))`. This may wrap, leading to a forever iteration on 32bit systems. This patch solves it by adding some checks on calculating end address of current ATTR_RECORD during iteration.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5559eb5809353a83a40a1e4e7f066431c7b83020 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 86f36de14dce5802856bb7a5921d74439db00b64 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 45683723f6b53e39e8a4cec0894e61fd6ec71989 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b612f924f296408d7d02fb4cd01218afd4ed7184 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 957732a09c3828267c2819d31c425aa793dd475b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b63ddb3ba61e2d3539f87e095c881e552bc45dab (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 785b2af9654b8beac55644e36da0085c5d776361 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 63095f4f3af59322bea984a6ae44337439348fe0 (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.9.334 , ≤ 4.9.* (semver)
Unaffected: 4.14.300 , ≤ 4.14.* (semver)
Unaffected: 4.19.267 , ≤ 4.19.* (semver)
Unaffected: 5.4.225 , ≤ 5.4.* (semver)
Unaffected: 5.10.156 , ≤ 5.10.* (semver)
Unaffected: 5.15.80 , ≤ 5.15.* (semver)
Unaffected: 6.0.10 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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Show details on NVD website

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This\\nmay wrap, leading to a forever iteration on 32bit systems.\\n\\nThis patch solves it by adding some checks on calculating end address\\nof current ATTR_RECORD during iteration.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ntfs: desbordamiento de comprobaci\u00f3n al iterar ATTR_RECORDs El kernel itera sobre los ATTR_RECORD en el registro mft en ntfs_attr_find(). Debido a que los ATTR_RECORD est\u00e1n uno al lado del otro, el kernel puede obtener el siguiente ATTR_RECORD desde la direcci\u00f3n final del ATTR_RECORD actual, a trav\u00e9s del campo de longitud del ATTR_RECORD actual. El problema es que durante la iteraci\u00f3n, cuando el kernel calcula la direcci\u00f3n final del ATTR_RECORD actual, el kernel puede desencadenar un error de desbordamiento de enteros al ejecutar `a = (ATTR_RECORD*)((u8*)a + le32_to_cpu(a-\u0026gt;length))`. Esto puede envolverse, lo que lleva a una iteraci\u00f3n eterna en sistemas de 32 bits. 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    "redhat_vex": {
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: ntfs: check overflow when iterating ATTR_RECORDs",
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      "version": "3"
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      "product_status:known_affected": "634",
      "product_status:known_not_affected": "183",
      "product_status:recommended": "92",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49762",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49762.json",
      "version": "36"
    }
  }
}



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Tags
Taxonomy of the tags.


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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.

Sightings

Author Source Type Date Other

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.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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