CVE-2024-26777: Debian Linux

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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

• Debian Debian Linux: version 10.0 only
• Linux Linux Kernel: before 4.19.308 (fixed in 4.19.308); from 4.20, before 5.4.270 (fixed in 5.4.270); from 5.5, before 5.10.211 (fixed in 5.10.211); from 5.11, before 5.15.150 (fixed in 5.15.150); from 5.16, before 6.1.80 (fixed in 6.1.80); from 6.2, before 6.6.19 (fixed in 6.6.19); …

Published 2024-04-03. Last modified 2026-06-17.