CVE-2026-80786
Published: September 8, 2026Last modified: November 3, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: Wrap user-invoked calls to fb_set_var() in helper Handle fbcon during display updates in fb_set_var_from_user(). Check with fbcon if the mode change is possible, update hardware state and finally update fbcon. Update all callers. Only the FBIOPUT_VSCREENINFO ioctl currently does all steps. Other mode-changes callers in sysfs and driver code are missing fbcon-related steps. With the new helper, ps3fb and sh_mobile_lcdcfb no longer maintain fbcon state themselves.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.191-r0) |
| 25 LTS | linux-lts | Fixed (6.12.115-r0) | |
| Stream | linux-lts | Fixed (6.18.58-r0) |
References
- https://git.kernel.org/stable/c/07f7e46833f71472e30da54a50dacdf48521bdd3
- https://git.kernel.org/stable/c/3130e7bf43ecfe3a15bcf90b9698e0764a2d8d08
- https://git.kernel.org/stable/c/6f611e5e5f3327cf2e2daabe6ee5acac58cc784e
- https://git.kernel.org/stable/c/af39d039b5591e3ebaa2e013862bd8cacc6d9dc3
- https://git.kernel.org/stable/c/d33589eff3d40439b3c83e8da0d07d20df797d50
- https://git.kernel.org/stable/c/ed7e9715849abd0816b8487b0d12ebd05d6e938b