CVE-2026-31618

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2f207e46c62688bb7eb4e3feaf9a0d94020fb0c9affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6c05191598eca87a87329b3f6e4a0825775f09cfaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 59bde9e0930efef1286768cb65fc78d5e5267f93affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 859a239d58a812b61267d9944b701affe6a6244eaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 53cb4e79a07124d2ebe502983c29800104080b47affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fc386daa6846551a88d338ba9864fc2812cd9030affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6567d3e1aaadfebf44ce7dc9ea2630323cd4c736affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 63dfb0b4741f46d65b667c4275132b3d1966acc8affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8f98b81fe011e1879e6a7b1247e69e06a5e17af2affected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.136 <= 6.6.*unaffected
LinuxLinux6.12.83 <= 6.12.*unaffected
LinuxLinux6.18.24 <= 6.18.*unaffected
LinuxLinux6.19.14 <= 6.19.*unaffected
LinuxLinux7.0.1 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References