fkie_cve-2022-39842
Vulnerability from fkie_nvd
Published
2022-09-05 07:15
Modified
2024-11-21 07:18
Severity ?
6.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Summary
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.
References
cve@mitre.orghttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19Release Notes, Vendor Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7Patch, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lore.kernel.org/all/YylaC1wHHyLw22D3%40kadam/T/
cve@mitre.orghttps://www.debian.org/security/2022/dsa-5257Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lore.kernel.org/all/YylaC1wHHyLw22D3%40kadam/T/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5257Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 5.19
linux linux_kernel 5.19
linux linux_kernel 5.19
debian debian_linux 10.0
debian debian_linux 10.0
debian debian_linux 11.0


To clipboard 

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                     versionEndExcluding: "5.19",
                     vulnerable: true,
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      {
         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: "2024-11-21T07:18:22.310",
   metrics: {
      cvssMetricV31: [
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            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",
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   published: "2022-09-05T07:15:08.170",
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   vulnStatus: "Modified",
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               value: "CWE-190",
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}


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