gsd-2022-39842
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
** DISPUTED ** An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen.
Aliases
Aliases
CVE-2022-39842


To clipboard 

{
  "GSD": {
    "alias": "CVE-2022-39842",
    "description": "An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur.",
    "id": "GSD-2022-39842",
    "references": [
      "https://alas.aws.amazon.com/cve/html/CVE-2022-39842.html",
      "https://advisories.mageia.org/CVE-2022-39842.html",
      "https://www.suse.com/security/cve/CVE-2022-39842.html",
      "https://ubuntu.com/security/CVE-2022-39842",
      "https://security.archlinux.org/CVE-2022-39842"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-39842"
      ],
      "details": "** DISPUTED ** An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen.",
      "id": "GSD-2022-39842",
      "modified": "2023-12-13T01:19:20.435700Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ID": "CVE-2022-39842",
        "STATE": "PUBLIC"
      },
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          }
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            "value": "An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen."
          },
          {
            "lang": "es",
            "value": "Se ha detectado un problema en el kernel de Linux versiones anteriores a 5.19. En la funci\u00f3n pxa3xx_gcu_write en el archivo drivers/video/fbdev/pxa3xx-gcu.c, el par\u00e1metro count presenta un conflicto de tipo size_t frente a int, causando un desbordamiento de enteros y omite la comprobaci\u00f3n de tama\u00f1o. Adem\u00e1s, al ser usado como tercer argumento de copy_from_user(), puede producirse un desbordamiento de pila"
          }
        ],
        "id": "CVE-2022-39842",
        "lastModified": "2024-04-11T01:16:27.670",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
                "version": "3.1"
              },
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              "impactScore": 4.2,
              "source": "nvd@nist.gov",
              "type": "Primary"
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        },
        "published": "2022-09-05T07:15:08.170",
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            "source": "cve@mitre.org",
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        "vulnStatus": "Modified",
        "weaknesses": [
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  }
}


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