Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fbdev: rivafb: fixed a divide error in nv3arb A userspace program can trigger the RIVA NV3 arbitration code by calling the FBIOPUTVSCREENINFO ioctl on /dev/fb. When doing so, the driver recomputes FIFO arbitration parameters in...

Linux Distros Unpatched Vulnerability : CVE-2026-23266

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fbdev: rivafb: fix divide error in nv3arb A userspace program can trigger the RIVA NV3 arbitration code by calling the FBIOPUTVSCREENINFO ioctl on /dev/fb. When...

EUVD-2026-12907

In the Linux kernel, the following vulnerability has been resolved: fbdev: rivafb: fix divide error in nv3arb A userspace program can trigger the RIVA NV3 arbitration code by calling the FBIOPUTVSCREENINFO ioctl on /dev/fb. When doing so, the driver recomputes FIFO arbitration parameters in nv3ar...

CVE-2026-23266

CVE-2026-23266 : In the Linux kernel fbdev rivafb driver, nv3_arb() can divide by state->mclk_khz (derived from PRAMDAC MCLK PLL) if an attacker exposes a zero value, causing a divide error and kernel crash. The fix adds a zero-check for state->mclk_khz before division. Affected: fbdev/riva...

CVE-2026-23266 fbdev: rivafb: fix divide error in nv3_arb()

In the Linux kernel, the following vulnerability has been resolved: fbdev: rivafb: fix divide error in nv3arb A userspace program can trigger the RIVA NV3 arbitration code by calling the FBIOPUTVSCREENINFO ioctl on /dev/fb. When doing so, the driver recomputes FIFO arbitration parameters in nv3ar...