CVE-2026-80570

Local memory corruption via stale F54 report size

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 the V4L2 interface. On an F54 work error, rmi_f54_work retains the prior report size, so rmi_f54_buffer_queue copies that stale length into a smaller buffer. Access to local V4L2 ioctls and an F54 diagnostics node is required; triggering the overflow can crash the system or alter kernel memory.

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 synaptics-rmi4 F54 driver in Linux allows local users to corrupt kernel memory through the V4L2 interface. On an F54 work error, rmi_f54_work retains the prior report size, so rmi_f54_buffer_queue copies that stale length into a smaller buffer. Access to local V4L2 ioctls and an F54 diagnostics node is required; triggering the overflow can crash the system or alter kernel memory.

The record

CVE
CVE-2026-80570
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-805, CWE-122, 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 <62079c17ec07d64362bec367ee7a525b0dbf6bf9
  2. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <77749685e55da19b187df215b5da4080842ca5c7
  3. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <79521ed3cc9ea48476666ccacf45ecd6954b29a4
  4. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <88c8174d72900d77fbdf2f527d54b6ff2da876a8
  5. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <b28593a05afdd812b590e1045b5bd862a5869225
  6. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <c669c64ab71afa7b467c4d7e18f6a05e96b97a1f
  7. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <c6cfda79f26c69e97db9805808c3b44d02227b4b
  8. Affected versionversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <dc76c3c8e8ad09362b8c1561f3928288c15cba2e
  9. Affected versionversion=4.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <62079c17ec07d64362bec367ee7a525b0dbf6bf9; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <77749685e55da19b187df215b5da4080842ca5c7; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <79521ed3cc9ea48476666ccacf45ecd6954b29a4; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <88c8174d72900d77fbdf2f527d54b6ff2da876a8; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <b28593a05afdd812b590e1045b5bd862a5869225; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <c669c64ab71afa7b467c4d7e18f6a05e96b97a1f; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <c6cfda79f26c69e97db9805808c3b44d02227b4b; version=3a762dbd5347514c3cb2ac756a92a3d1c7646a2d <dc76c3c8e8ad09362b8c1561f3928288c15cba2e; version=4.9

Published CVSS scores

7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-805Buffer Access with Incorrect Length Value
CWE-122Heap-based 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

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Your stack

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