CVE-2026-80786
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.
Affected versions
Linux kernel versions
2.6.12
and later are affected. Fixed in
6.18.57,
7.1.11,
7.2
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-80786?
CVE-2026-80786 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.12 onward and has been patched in 6.18.57, 7.1.11 and 7.2. CVE-2026-80786 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-80786?
Yes. CVE-2026-80786 has been patched. Fixed versions include 6.18.57, 7.1.11 and 7.2. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-80786 actively exploited?
No. CVE-2026-80786 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.