CVE-2026-80569

Kernel memory corruption via oversized F54 report

Published Aug 26, 2026 · Updated Aug 27, 2026

Heap buffer overflow in the synaptics-rmi4 F54 driver in Linux allows local users to corrupt kernel memory through V4L2 capture. rmi_f54_get_report_size() uses F55 electrode counts to size reads into report_data, which was allocated from smaller F54 counts, so rmi_f54_work() writes past the heap buffer. Exploitation requires access to the F54 diagnostics video node and a malicious or malfunctioning RMI4 device; successful triggering can disclose or corrupt kernel memory and panic the host.

CVSS severity7.8
High
EPSS probability0.12%
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 synaptics-rmi4 F54 driver in Linux allows local users to corrupt kernel memory through V4L2 capture. rmi_f54_get_report_size() uses F55 electrode counts to size reads into report_data, which was allocated from smaller F54 counts, so rmi_f54_work() writes past the heap buffer. Exploitation requires access to the F54 diagnostics video node and a malicious or malfunctioning RMI4 device; successful triggering can disclose or corrupt kernel memory and panic the host.

The record

CVE
CVE-2026-80569
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-120, 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=4.10
  2. Affected versionversion=c762cc68b6a12eedebefc156ea4838e54804e2eb <12be3c6ca9589afd6ade41a59c761866e526634d
  3. Affected versionversion=c762cc68b6a12eedebefc156ea4838e54804e2eb <42eaf0e6f79c487f419737314cf0760f7331d368
  4. Affected versionversion=c762cc68b6a12eedebefc156ea4838e54804e2eb <49c5adc2b7d6e43c5cf033e1c86fdb9c16ababb1
  5. Affected versionversion=c762cc68b6a12eedebefc156ea4838e54804e2eb <6b06aab79ff166d5781ce792d91acc2e58b1770b
  6. Affected versionversion=c762cc68b6a12eedebefc156ea4838e54804e2eb <6b3bdd44d4cd7d5e35de1d0f06d4930f3cecd403
  7. Affected versionversion=c762cc68b6a12eedebefc156ea4838e54804e2eb <b2f596f00d27703ce09167201ba57f55be8d2f9a
  8. Affected versionversion=c762cc68b6a12eedebefc156ea4838e54804e2eb <b3932101c9c457148038392bc977f9b31e125a86
  9. Affected versionversion=c762cc68b6a12eedebefc156ea4838e54804e2eb <b7b9a8b1c303b62371698e396654d6724c79cb74

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=c762cc68b6a12eedebefc156ea4838e54804e2eb <12be3c6ca9589afd6ade41a59c761866e526634d; version=c762cc68b6a12eedebefc156ea4838e54804e2eb <42eaf0e6f79c487f419737314cf0760f7331d368; version=c762cc68b6a12eedebefc156ea4838e54804e2eb <49c5adc2b7d6e43c5cf033e1c86fdb9c16ababb1; version=c762cc68b6a12eedebefc156ea4838e54804e2eb <6b06aab79ff166d5781ce792d91acc2e58b1770b; version=c762cc68b6a12eedebefc156ea4838e54804e2eb <6b3bdd44d4cd7d5e35de1d0f06d4930f3cecd403; version=c762cc68b6a12eedebefc156ea4838e54804e2eb <b2f596f00d27703ce09167201ba57f55be8d2f9a; version=c762cc68b6a12eedebefc156ea4838e54804e2eb <b3932101c9c457148038392bc977f9b31e125a86; version=c762cc68b6a12eedebefc156ea4838e54804e2eb <b7b9a8b1c303b62371698e396654d6724c79cb74

Published CVSS scores

7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.7Amazon LinuxCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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

See the directory against your own environment.

Your stack

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