CVE-2026-31603

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < 124a43550db8a74eef080cd4573a4904efe67029affected
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < b285a8f3bbb821a93eb37c2740a68ca1d7112a59affected
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < 3300b049693138852a4c6738b5f1194a1ee91dddaffected
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < 779412e0e391fd4a0d12e1d1adaa7bf043de62d7affected
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < 2f640c6043aeab31a2f607d7605271860c3b11dfaffected
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < 1412ba36597a82e928f20047f41d6c6582dafe8aaffected
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < 6144895a4335a2491c282931f1f2fa610b86339faffected
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < daf6733bd7c4c5015b431739ac29b0e29021096baffected
LinuxLinux81dee67e215b23f0c98182eece122b906d35765a < 75a1621e4f91310673c9acbcbb25c2a7ff821cd3affected
LinuxLinux4.1affected
LinuxLinux0 < 4.1unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.136 <= 6.6.*unaffected
LinuxLinux6.12.83 <= 6.12.*unaffected
LinuxLinux6.18.24 <= 6.18.*unaffected
LinuxLinux6.19.14 <= 6.19.*unaffected
LinuxLinux7.0.1 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References