CVE-2025-6349

Freed GPU memory access via use-after-free

Published Dec 1, 2025 · Updated Dec 1, 2025

Use-after-free in Arm Valhall and 5th Gen GPU Kernel Drivers r53p0 through r54p1 allows local users to access freed GPU memory. Arm identifies improper GPU memory processing as the trigger but does not disclose the responsible function, request path, or lifetime error. A local non-privileged process must reach the GPU driver, and the documented impact is limited to reading or modifying data in the freed allocation.

CVSS severity5.1
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Arm Valhall and 5th Gen GPU Kernel Drivers r53p0 through r54p1 allows local users to access freed GPU memory. Arm identifies improper GPU memory processing as the trigger but does not disclose the responsible function, request path, or lifetime error. A local non-privileged process must reach the GPU driver, and the documented impact is limited to reading or modifying data in the freed allocation.

The record

CVE
CVE-2025-6349
Published
Dec 1, 2025
Updated
Dec 1, 2025
Vendor
Arm
Product
Valhall GPU Kernel Driver
Classifications
CWE-416
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 1, 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=r53p0 <=r54p1 changes=[{"at":"r54p2","status":"unaffected"},{"at":"r55p0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Arm · Valhall GPU Kernel Driverversion=r53p0 <=r54p1 changes=[{"at":"r54p2","status":"unaffected"},{"at":"r55p0","status":"unaffected"}]
Arm · Arm 5th Gen GPU Architecture Kernel Driverversion=r53p0 <=r54p1 changes=[{"at":"r54p2","status":"unaffected"},{"at":"r55p0","status":"unaffected"}]

Published CVSS scores

5.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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