CVE-2022-39842
Vulnerability from cvelistv5
Published
2022-09-05 00:00
Modified
2024-08-03 12:07
Severity ?
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
Impacted products
n/an/a
Show details on NVD website

To clipboard 

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