CVE-2022-39842

An issue was discovered in the Linux kernel before 5.19

published September 5, 2022

CVSS
—
EPSS
1%
Percentile
47.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00590 · 47.5th percentile
Published
2022-09-05T00:00Z
EPSS history
Timeline
  • 05 SEP 00:00Z
    An issue was discovered in the Linux kernel before 5.19
    cvelistv5