Description
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: linux kernel
References9
- git.kernel.org/stable/c/03797cdee38ef19c87785622d423aabaafb71c5f Patch
- git.kernel.org/stable/c/6de048d78f3029744778b7a2891745f3ca7c209a Patch
- git.kernel.org/stable/c/a31e4518bec70333a0a98f2946a12b53b45fe5b9 Patch
- git.kernel.org/stable/c/afaaaa38579f1252bb42b145f6e88a955c4f73f3 Patch
- git.kernel.org/stable/c/cccbf9b7fdab48ce4feb69c24f7f928aa8e4e8b8 Patch
- git.kernel.org/stable/c/cce24f70090e0decb597b88bc52e8ef8efed6105 Patch
- git.kernel.org/stable/c/828ce54b27de93bd9c67991bca5a2c76c76742de
- git.kernel.org/stable/c/9981de9fb5ae0d3d6bc5ff5ca63350c2a3cdc564
- git.kernel.org/stable/c/fd50ab7dd4ee5bbb4aebffa76ae18484b03a8ea5
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 13 November 2026
- CWE
- CWE-369
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.