CVE-2026-80568

Kernel memory corruption via resized F54 reports

Published Aug 26, 2026 · Updated Aug 27, 2026

Heap buffer overflow in the Linux kernel allows local users to corrupt kernel memory through Synaptics RMI4 F54 V4L2 ioctls. rmi_f54_buffer_queue() copies the current, enlarged report into V4L2 buffers sized for the report type selected when streaming began. Access to /dev/v4l-touch* is required; the overwrite can expose or corrupt adjacent kernel memory and cause code execution or a kernel panic.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in the Linux kernel allows local users to corrupt kernel memory through Synaptics RMI4 F54 V4L2 ioctls. rmi_f54_buffer_queue() copies the current, enlarged report into V4L2 buffers sized for the report type selected when streaming began. Access to /dev/v4l-touch* is required; the overwrite can expose or corrupt adjacent kernel memory and cause code execution or a kernel panic.

The record

CVE
CVE-2026-80568
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-131, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <1d718f1461766e9f00a8dbeb4f13f1b1c19d90ac
  2. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <493ba8e794729649689438edba72337111303cc4
  3. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <7e994a9ecc0b49ad2fe63da9c92a8aca8a6614af
  4. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <cae79513f9115c350561b16f36adcb47c9bfff12
  5. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <ddd9a53faf3b65e5920cb802cb1db6f4615bdfef
  6. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <fa69f93015becf3729716de2199b58540aa99672
  7. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <fbfd76746adc16d64be29ff113f673b70bc3f5c2
  8. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <ff0849705d29277fd1f6fc6596674b9308724fb2
  9. Affected versionversion=4.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <1d718f1461766e9f00a8dbeb4f13f1b1c19d90ac; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <493ba8e794729649689438edba72337111303cc4; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <7e994a9ecc0b49ad2fe63da9c92a8aca8a6614af; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <cae79513f9115c350561b16f36adcb47c9bfff12; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <ddd9a53faf3b65e5920cb802cb1db6f4615bdfef; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <fa69f93015becf3729716de2199b58540aa99672; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <fbfd76746adc16d64be29ff113f673b70bc3f5c2; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <ff0849705d29277fd1f6fc6596674b9308724fb2; version=4.9

Published CVSS scores

6.1Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Weakness, pattern, technique

CWE-131Incorrect Calculation of Buffer Size
T1068Exploitation for Privilege Escalation

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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