CVE-2026-22163

Arbitrary physical-memory writes via unsynchronized MMU access

Published Mar 20, 2026 · Updated Mar 20, 2026

Race condition in Imagination Technologies Graphics DDK through 25.3 RTM allows local users to write arbitrary physical memory. On 32-bit host CPUs, the kernel module handles MMU page-table state as a shared resource without synchronizing concurrent IOCTL-driven access, letting the GPU write unintended physical pages. Exploitation requires locally running low-privilege malware to misuse the unsupported IOCTL sequence; the resulting writes can corrupt kernel or driver memory.

CVSS severity7.8
High
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Imagination Technologies Graphics DDK through 25.3 RTM allows local users to write arbitrary physical memory. On 32-bit host CPUs, the kernel module handles MMU page-table state as a shared resource without synchronizing concurrent IOCTL-driven access, letting the GPU write unintended physical pages. Exploitation requires locally running low-privilege malware to misuse the unsupported IOCTL sequence; the resulting writes can corrupt kernel or driver memory.

The record

CVE
CVE-2026-22163
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Imagination Technologies
Product
Graphics DDK
Classifications
CWE-820, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 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=1.17 RTM
  2. Affected versionversion=1.18 RTM
  3. Affected versionversion=23.2 RTM
  4. Affected versionversion=24.1 RTM <=24.2 RTM
  5. Affected versionversion=25.1 RTM <=25.3 RTM

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Imagination Technologies · Graphics DDKversion=1.17 RTM; version=1.18 RTM; version=23.2 RTM; version=24.1 RTM <=24.2 RTM; version=25.1 RTM <=25.3 RTM

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-820Missing Synchronization
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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