In the Linux kernel, the following vulnerability has been resolved: fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO Much like commit 19f953e74356 ("fbdev: fb_pm2fb: Avoid potential divide by zero error"), we also need to prevent that same crash from happening in the udlfb driver as it uses pixclock directly when dividing, which will crash.
https://git.kernel.org/stable/c/fc386daa6846551a88d338ba9864fc2812cd9030
https://git.kernel.org/stable/c/8f98b81fe011e1879e6a7b1247e69e06a5e17af2
https://git.kernel.org/stable/c/859a239d58a812b61267d9944b701affe6a6244e
https://git.kernel.org/stable/c/6c05191598eca87a87329b3f6e4a0825775f09cf
https://git.kernel.org/stable/c/6567d3e1aaadfebf44ce7dc9ea2630323cd4c736
https://git.kernel.org/stable/c/63dfb0b4741f46d65b667c4275132b3d1966acc8
https://git.kernel.org/stable/c/59bde9e0930efef1286768cb65fc78d5e5267f93
https://git.kernel.org/stable/c/53cb4e79a07124d2ebe502983c29800104080b47
https://git.kernel.org/stable/c/2f207e46c62688bb7eb4e3feaf9a0d94020fb0c9