vulnerability
Amazon Linux AMI: CVE-2022-39842: Security patch for kernel (ALAS-2022-1645)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:P/A:C) | Sep 5, 2022 | Dec 10, 2022 | May 21, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:P/A:C)
Published
Sep 5, 2022
Added
Dec 10, 2022
Modified
May 21, 2025
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. NOTE: the original discoverer disputes that the overflow can actually happen.
Solution
amazon-linux-upgrade-kernel
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