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medium5.5

CVE-2024-26777

In the Linux kernel, the following vulnerability has been resolved: fbdev: sis: Error out if pixclock equals zero The userspace program could pass any values t…

Impact

In the Linux kernel, the following vulnerability has been resolved: fbdev: sis: Error out if pixclock equals zero The userspace program could pass any values to the driver through ioctl() interface. If the driver doesn't check the value of pixclock, it may cause divide-by-zero error. In sisfb_check_var(), var->pixclock is used as a divisor to caculate drate before it is checked against zero. Fix this by checking it at the beginning. This is similar to CVE-2022-3061 in i740fb which was fixed by commit 15cf0b8.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
before 4.19.308
from 4.20 before 5.4.270
from 5.5 before 5.10.211
from 5.11 before 5.15.150
from 5.16 before 6.1.80
from 6.2 before 6.6.19
DebianDebian Linux
Version 10.0

Weakness classification

CWE-369

References