CVE-2026-31603: Linux kernel · staging: sm750fb: fix division by zero in ps_to_hz()
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: staging: sm750fb: fix division by zero in ps_to_hz() ps_to_hz() is called from hw_sm750_crtc_set_mode() without validating that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO causes a division by zero. Fix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent with other framebuffer drivers.
References
- git.kernel.org/stable/c/124a43550db8a74eef080cd4573a4904efe67029 (opens in a new tab)
- git.kernel.org/stable/c/b285a8f3bbb821a93eb37c2740a68ca1d7112a59 (opens in a new tab)
- git.kernel.org/stable/c/3300b049693138852a4c6738b5f1194a1ee91ddd (opens in a new tab)
- git.kernel.org/stable/c/779412e0e391fd4a0d12e1d1adaa7bf043de62d7 (opens in a new tab)
- git.kernel.org/stable/c/2f640c6043aeab31a2f607d7605271860c3b11df (opens in a new tab)
- git.kernel.org/stable/c/1412ba36597a82e928f20047f41d6c6582dafe8a (opens in a new tab)
- git.kernel.org/stable/c/6144895a4335a2491c282931f1f2fa610b86339f (opens in a new tab)
- git.kernel.org/stable/c/daf6733bd7c4c5015b431739ac29b0e29021096b (opens in a new tab)
- git.kernel.org/stable/c/75a1621e4f91310673c9acbcbb25c2a7ff821cd3 (opens in a new tab)