Fixed
Created: Sep 5, 2022
Updated: Nov 2, 2022
Resolved Date: Oct 31, 2022
Found In Version: 10.18.44.1
Fix Version: 10.18.44.29
Severity: Standard
Applicable for: Wind River Linux LTS 18
Component/s: Kernel
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.
CREATE(Triage):(User=admin) CVE-2022-39842 (https://nvd.nist.gov/vuln/detail/CVE-2022-39842)
