FKIE_CVE-2022-39842

Vulnerability from fkie_nvd - Published: 2022-09-05 07:15 - Updated: 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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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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