CVE-2026-31618: Linux kernel · fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 12 Nov 2026, 00:34 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 24 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
Description
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.
References
- git.kernel.org/stable/c/2f207e46c62688bb7eb4e3feaf9a0d94020fb0c9 (opens in a new tab)
- git.kernel.org/stable/c/6c05191598eca87a87329b3f6e4a0825775f09cf (opens in a new tab)
- git.kernel.org/stable/c/59bde9e0930efef1286768cb65fc78d5e5267f93 (opens in a new tab)
- git.kernel.org/stable/c/859a239d58a812b61267d9944b701affe6a6244e (opens in a new tab)
- git.kernel.org/stable/c/53cb4e79a07124d2ebe502983c29800104080b47 (opens in a new tab)
- git.kernel.org/stable/c/fc386daa6846551a88d338ba9864fc2812cd9030 (opens in a new tab)
- git.kernel.org/stable/c/6567d3e1aaadfebf44ce7dc9ea2630323cd4c736 (opens in a new tab)
- git.kernel.org/stable/c/63dfb0b4741f46d65b667c4275132b3d1966acc8 (opens in a new tab)
- git.kernel.org/stable/c/8f98b81fe011e1879e6a7b1247e69e06a5e17af2 (opens in a new tab)