CVE-2026-31605

Summary

In the Linux kernel, the following vulnerability has been resolved:

fbdev: udlfb: 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
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < 9981de9fb5ae0d3d6bc5ff5ca63350c2a3cdc564affected
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < fd50ab7dd4ee5bbb4aebffa76ae18484b03a8ea5affected
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < 828ce54b27de93bd9c67991bca5a2c76c76742deaffected
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < cce24f70090e0decb597b88bc52e8ef8efed6105affected
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < 03797cdee38ef19c87785622d423aabaafb71c5faffected
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < 6de048d78f3029744778b7a2891745f3ca7c209aaffected
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < cccbf9b7fdab48ce4feb69c24f7f928aa8e4e8b8affected
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < afaaaa38579f1252bb42b145f6e88a955c4f73f3affected
LinuxLinux59277b679f8b5ce594e367759256668eba652d0d < a31e4518bec70333a0a98f2946a12b53b45fe5b9affected
LinuxLinux2.6.34affected
LinuxLinux0 < 2.6.34unaffected
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