CVE-2026-80786

CVE-2026-80786 affects the Linux kernel fbdev (framebuffer) subsystem. The root cause is that user-invoked calls to fb_set_var() from sysfs and driver code paths were missing fbcon -related steps (checking mode-change feasibility, updating hardware state, and updating fbcon). Only the FBIOPUT_VSC...

CVE-2026-80785 fbdev: serialize mode sysfs access with lock_fb_info()

In the Linux kernel, the following vulnerability has been resolved: fbdev: serialize mode sysfs access with lockfbinfo showmode, showmodes, and storemode access fbinfo-modelist and fbinfo-mode without holding lockfbinfo. storemodes takes lockfbinfo while replacing the modelist and freeing the old...

CVE-2026-80579

A flaw was found in the Linux kernel's fbdev component. A local user could exploit a use-after-free vulnerability by manipulating video modes. When a mode is deleted, the fbinfo-mode pointer might not be cleared, leading to a stale pointer dereference during subsequent system file system sysfs...

CVE-2026-80580 fbdev: bound mode sysfs output to the sysfs buffer

In the Linux kernel, the following vulnerability has been resolved: fbdev: bound mode sysfs output to the sysfs buffer modestring uses snprintf which can return a value larger than the remaining buffer space. showmodes accumulates the return value into i without checking whether i has reached...

CVE-2024-56746

In the Linux kernel, the following vulnerability has been resolved: fbdev: sh7760fb: Fix a possible memory leak in sh7760fballocmem When information such as info-screenbase is not ready, calling sh7760fbfreemem does not release memory correctly. Call dmafreecoherent instead...