CVE-2021-0951

Local privilege escalation via heap reference-count overflow

Published Oct 11, 2022 · Updated Aug 3, 2024

Integer overflow in Imagination Technologies PowerVR GPU for Android SoC allows local users to execute arbitrary code and gain privileges. DevmemIntHeapAcquire increments a device-memory heap reference count without rejecting overflow, allowing the count to wrap and corrupt heap-lifetime accounting. A local malicious application needs no user interaction or additional execution privileges, and successful exploitation elevates its code within the affected device.

CVSS severity7.8
High
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Imagination Technologies PowerVR GPU for Android SoC allows local users to execute arbitrary code and gain privileges. DevmemIntHeapAcquire increments a device-memory heap reference count without rejecting overflow, allowing the count to wrap and corrupt heap-lifetime accounting. A local malicious application needs no user interaction or additional execution privileges, and successful exploitation elevates its code within the affected device.

The record

CVE
CVE-2021-0951
Published
Oct 11, 2022
Updated
Aug 3, 2024
Vendor
Imagination Technologies
Product
PowerVR GPU
Classifications
CWE-190, T1404
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=Android SoC

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Imagination Technologies · PowerVR GPUversion=Android SoC

Published CVSS scores

7.8NIST NVDCVSS: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-190Integer Overflow or Wraparound
T1404Exploitation 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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