CVE-2026-80786 (GCVE-0-2026-80786)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:12 – Updated: 2026-09-07 14:21
VLAI
Title
fbdev: Wrap user-invoked calls to fb_set_var() in helper
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 07f7e46833f71472e30da54a50dacdf48521bdd3 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6f611e5e5f3327cf2e2daabe6ee5acac58cc784e (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 7.1.11 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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            "drivers/video/fbdev/core/fbsysfs.c",
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}



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