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: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "cve@mitre.org",
            ID: "CVE-2022-39842",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "n/a",
                              version: {
                                 version_data: [
                                    {
                                       version_value: "n/a",
                                    },
                                 ],
                              },
                           },
                        ],
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                     vendor_name: "n/a",
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         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "** 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.",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "n/a",
                     },
                  ],
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            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19",
                  refsource: "MISC",
                  url: "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19",
               },
               {
                  name: "https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7",
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                  url: "https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7",
               },
               {
                  name: "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update",
                  refsource: "MLIST",
                  url: "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html",
               },
               {
                  name: "DSA-5257",
                  refsource: "DEBIAN",
                  url: "https://www.debian.org/security/2022/dsa-5257",
               },
               {
                  name: "[debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update",
                  refsource: "MLIST",
                  url: "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html",
               },
               {
                  name: "https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/",
                  refsource: "MISC",
                  url: "https://lore.kernel.org/all/YylaC1wHHyLw22D3@kadam/T/",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         cve: {
            configurations: [
               {
                  nodes: [
                     {
                        cpeMatch: [
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                              criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                              matchCriteriaId: "E74E9AF8-BDF5-4917-A9CA-0AAD8E13149B",
                              versionEndExcluding: "5.19",
                              vulnerable: true,
                           },
                           {
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                           {
                              criteria: "cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*",
                              matchCriteriaId: "F3068028-F453-4A1C-B80F-3F5609ACEF60",
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                        negate: false,
                        operator: "OR",
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               },
               {
                  nodes: [
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                              vulnerable: true,
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               {
                  nodes: [
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            ],
            descriptions: [
               {
                  lang: "en",
                  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 función pxa3xx_gcu_write en el archivo drivers/video/fbdev/pxa3xx-gcu.c, el parámetro count presenta un conflicto de tipo size_t frente a int, causando un desbordamiento de enteros y omite la comprobación de tamaño. Además, 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",
                     },
                     exploitabilityScore: 1.8,
                     impactScore: 4.2,
                     source: "nvd@nist.gov",
                     type: "Primary",
                  },
               ],
            },
            published: "2022-09-05T07:15:08.170",
            references: [
               {
                  source: "cve@mitre.org",
                  tags: [
                     "Release Notes",
                     "Vendor Advisory",
                  ],
                  url: "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19",
               },
               {
                  source: "cve@mitre.org",
                  tags: [
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                     "Third Party Advisory",
                  ],
                  url: "https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7",
               },
               {
                  source: "cve@mitre.org",
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               },
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                  tags: [
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                  url: "https://www.debian.org/security/2022/dsa-5257",
               },
            ],
            sourceIdentifier: "cve@mitre.org",
            vulnStatus: "Modified",
            weaknesses: [
               {
                  description: [
                     {
                        lang: "en",
                        value: "CWE-190",
                     },
                  ],
                  source: "nvd@nist.gov",
                  type: "Primary",
               },
            ],
         },
      },
   },
}


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