CVE-2026-31605

This CVE concerns the Linux kernel udlfb driver, where FBIOPUT_VSCREENINFO could trigger a divide-by-zero when pixclock is used directly in the udlfb path. The issue mirrors a prior fix in fb_dev paths and has been resolved in the kernel with related commits (e.g., addressing divide-by-zero in si...

CVE-2026-31605 fbdev: udlfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO

In the Linux kernel, the following vulnerability has been resolved: fbdev: udlfb: avoid divide-by-zero on FBIOPUTVSCREENINFO Much like commit 19f953e74356 "fbdev: fbpm2fb: Avoid potential divide by zero error", we also need to prevent that same crash from happening in the udlfb driver as it uses...

CVE-2021-33655

When sending malicous data to kernel by ioctl cmd FBIOPUTVSCREENINFO,kernel will write memory out of bounds...