fbdev: udlfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
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 products
Linux · LinuxReferences
https://git.kernel.org/stable/c/03797cdee38ef19c87785622d423aabaafb71c5fhttps://git.kernel.org/stable/c/6de048d78f3029744778b7a2891745f3ca7c209ahttps://git.kernel.org/stable/c/828ce54b27de93bd9c67991bca5a2c76c76742dehttps://git.kernel.org/stable/c/9981de9fb5ae0d3d6bc5ff5ca63350c2a3cdc564https://git.kernel.org/stable/c/a31e4518bec70333a0a98f2946a12b53b45fe5b9https://git.kernel.org/stable/c/afaaaa38579f1252bb42b145f6e88a955c4f73f3https://git.kernel.org/stable/c/cccbf9b7fdab48ce4feb69c24f7f928aa8e4e8b8https://git.kernel.org/stable/c/cce24f70090e0decb597b88bc52e8ef8efed6105https://git.kernel.org/stable/c/fd50ab7dd4ee5bbb4aebffa76ae18484b03a8ea5