CVE-2026-80740Hinoki check available

DRM log hang via oversized scale parameter

Published Sep 3, 2026 · Updated Sep 3, 2026

Denial of service in Linux kernel 6.14 allows attackers to hang DRM log processing through an oversized scale parameter. drm_log_setup_modeset() permits scaled font dimensions larger than the display, producing zero columns that keep drm_log_draw_kmsg_record() from decrementing its remaining length. Reachability requires control of the read-only-at-runtime drm_log.scale parameter and a DRM display smaller than the scaled font.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in Linux kernel 6.14 allows attackers to hang DRM log processing through an oversized scale parameter. drm_log_setup_modeset() permits scaled font dimensions larger than the display, producing zero columns that keep drm_log_draw_kmsg_record() from decrementing its remaining length. Reachability requires control of the read-only-at-runtime drm_log.scale parameter and a DRM display smaller than the scaled font.

The record

CVE
CVE-2026-80740
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=6.14
  2. Affected versionversion=8a4b913df427b8f900bcc7849cc15a7b81628d57 <50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6
  3. Affected versionversion=8a4b913df427b8f900bcc7849cc15a7b81628d57 <a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b
  4. Affected versionversion=8a4b913df427b8f900bcc7849cc15a7b81628d57 <f4f2bba28df9b9aaa00262a462139dbbcdc38d9f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=6.14; version=8a4b913df427b8f900bcc7849cc15a7b81628d57 <50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6; version=8a4b913df427b8f900bcc7849cc15a7b81628d57 <a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b; version=8a4b913df427b8f900bcc7849cc15a7b81628d57 <f4f2bba28df9b9aaa00262a462139dbbcdc38d9f

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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