Medium 5.5Published Apr 24, 2026

CVE-2026-31603staging: sm750fb: fix division by zero in ps_to_hz()

Updated under an hour ago (Oct 28, 2026, 6:00 AM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Jun 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 81dee67e215b23f0c98182eece122b906d35765a before 124a43550db8a74eef080cd4573a4904efe67029; from 81dee67e215b23f0c98182eece122b906d35765a before b285a8f3bbb821a93eb37c2740a68ca1d7112a59; from 81dee67e215b23f0c98182eece122b906d35765a before 3300b049693138852a4c6738b5f1194a1ee91ddd; from 81dee67e215b23f0c98182eece122b906d35765a before 779412e0e391fd4a0d12e1d1adaa7bf043de62d7; 81dee67e215b23f0c98182eece122b906d35765a builds before 2f640c6043aeab31a2f607d7605271860c3b11df; from 81dee67e215b23f0c98182eece122b906d35765a before 1412ba36597a82e928f20047f41d6c6582dafe8a; from 81dee67e215b23f0c98182eece122b906d35765a before 6144895a4335a2491c282931f1f2fa610b86339f; from 81dee67e215b23f0c98182eece122b906d35765a before daf6733bd7c4c5015b431739ac29b0e29021096b; and 1 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 4.1 before 6.6.136; from 6.7 before 6.12.83; from 6.13 before 6.18.24; from 6.19 before 6.19.14; from 7.0 before 7.0.1	NVD

References

References

https://git.kernel.org/stable/c/124a43550db8a74eef080cd4573a4904efe67029
https://git.kernel.org/stable/c/b285a8f3bbb821a93eb37c2740a68ca1d7112a59
https://git.kernel.org/stable/c/3300b049693138852a4c6738b5f1194a1ee91ddd
https://git.kernel.org/stable/c/779412e0e391fd4a0d12e1d1adaa7bf043de62d7	patch
https://git.kernel.org/stable/c/2f640c6043aeab31a2f607d7605271860c3b11df	patch
https://git.kernel.org/stable/c/1412ba36597a82e928f20047f41d6c6582dafe8a	patch
https://git.kernel.org/stable/c/6144895a4335a2491c282931f1f2fa610b86339f	patch
https://git.kernel.org/stable/c/daf6733bd7c4c5015b431739ac29b0e29021096b	patch
https://git.kernel.org/stable/c/75a1621e4f91310673c9acbcbb25c2a7ff821cd3	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.