CVE-2026-80786Hinoki check available

Inconsistent console state via unchecked mode changes

Published Sep 4, 2026 · Updated Sep 4, 2026

Improper fbdev mode handling in Linux before 7.1.11 allows local users to apply display changes without required fbcon checks. User-invoked sysfs and driver mode-change paths call fb_set_var without first checking fbcon compatibility or subsequently updating virtual-console state. Access to writable framebuffer controls is required, and the public record specifies no impact beyond inconsistent console and hardware display state.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper fbdev mode handling in Linux before 7.1.11 allows local users to apply display changes without required fbcon checks. User-invoked sysfs and driver mode-change paths call fb_set_var without first checking fbcon compatibility or subsequently updating virtual-console state. Access to writable framebuffer controls is required, and the public record specifies no impact beyond inconsistent console and hardware display state.

The record

CVE
CVE-2026-80786
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <7.1.11
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <07f7e46833f71472e30da54a50dacdf48521bdd3
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6f611e5e5f3327cf2e2daabe6ee5acac58cc784e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0 <7.1.11; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <07f7e46833f71472e30da54a50dacdf48521bdd3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6f611e5e5f3327cf2e2daabe6ee5acac58cc784e

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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