fkie_cve-2023-52979
Vulnerability from fkie_nvd
Published
2025-03-27 17:15
Modified
2025-06-25 20:59
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: squashfs: harden sanity check in squashfs_read_xattr_id_table While mounting a corrupted filesystem, a signed integer '*xattr_ids' can become less than zero. This leads to the incorrect computation of 'len' and 'indexes' values which can cause null-ptr-deref in copy_bio_to_actor() or out-of-bounds accesses in the next sanity checks inside squashfs_read_xattr_id_table(). Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/29e774dcb27116c06b9c57b1f1f14a1623738989Not Applicable
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72e544b1b28325fe78a4687b980871a7e4101f76Not Applicable
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b30a74f83265c24d1d0842c6c3928cd2e775a3fbNot Applicable
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b7398efe24a965cf3937b716c0b1011c201c5d6eNot Applicable
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf5d6612092408157db6bb500c70bf6d67c40fbcNot Applicable
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db76fc535fbdfbf29fd0b93e49627537ad794c8cNot Applicable
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de2785aa3448d1ee7be3ab47fd4a873025f1b3d7Not Applicable
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 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsquashfs: harden sanity check in squashfs_read_xattr_id_table\n\nWhile mounting a corrupted filesystem, a signed integer \u0027*xattr_ids\u0027 can\nbecome less than zero.  This leads to the incorrect computation of \u0027len\u0027\nand \u0027indexes\u0027 values which can cause null-ptr-deref in copy_bio_to_actor()\nor out-of-bounds accesses in the next sanity checks inside\nsquashfs_read_xattr_id_table().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: squashfs: endurecimiento de la comprobaci\u00f3n de seguridad en squashfs_read_xattr_id_table. Al montar un sistema de archivos da\u00f1ado, un entero con signo \u0027*xattr_ids\u0027 puede ser menor que cero. Esto provoca el c\u00e1lculo incorrecto de los valores de \u0027len\u0027 e \u0027indexes\u0027, lo que puede causar un valor nulo de referencia de referencia (ptr) en copy_bio_to_actor() o accesos fuera de l\u00edmites en las siguientes comprobaciones de seguridad dentro de squashfs_read_xattr_id_table(). Encontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con Syzkaller."
    }
  ],
  "id": "CVE-2023-52979",
  "lastModified": "2025-06-25T20:59:20.347",
  "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"
      }
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  "published": "2025-03-27T17:15:45.057",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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