CVE-2023-5643

Local memory corruption via improper GPU operations

Published Feb 5, 2024 · Updated May 15, 2025

Out-of-bounds write in Arm Mali GPU Kernel Drivers r41p0 through r45p0 allows local users to corrupt memory via improper GPU operations. Arm has not published the affected function or buffer; the disclosed operation writes beyond buffer bounds during GPU memory processing. Reachability depends on the driver configuration and carefully prepared system memory, and the bounded consequence is corruption of memory outside the intended buffer.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Arm Mali GPU Kernel Drivers r41p0 through r45p0 allows local users to corrupt memory via improper GPU operations. Arm has not published the affected function or buffer; the disclosed operation writes beyond buffer bounds during GPU memory processing. Reachability depends on the driver configuration and carefully prepared system memory, and the bounded consequence is corruption of memory outside the intended buffer.

The record

CVE
CVE-2023-5643
Published
Feb 5, 2024
Updated
May 15, 2025
Vendor
Arm
Product
Valhall GPU Kernel Driver
Classifications
CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 5, 2024CVE publishedPublication date reported by the CVE source.
  2. May 15, 2025Record 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=r41p0 <=r45p0 changes=[{"at":"r46p0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Arm · Valhall GPU Kernel Driverversion=r41p0 <=r45p0 changes=[{"at":"r46p0","status":"unaffected"}]
Arm · Bifrost GPU Kernel Driverversion=r41p0 <=r45p0 changes=[{"at":"r46p0","status":"unaffected"}]
Arm · Arm 5th Gen GPU Architecture Kernel Driverversion=r41p0 <=r45p0 changes=[{"at":"r46p0","status":"unaffected"}]

Published CVSS scores

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

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-787Out-of-bounds Write
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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