CVE-2021-0696

Local privilege escalation via list-removal race

Published Oct 11, 2022 · Updated Aug 3, 2024

Use-after-free in Imagination Technologies PowerVR GPU for Android SoCs allows local users to escalate privileges via a list-removal race. The dllist_remove_node function removes a list node without sufficient synchronization, so concurrent execution can access freed memory. A low-privileged local process must win the race; no user interaction or additional execution privileges are required.

CVSS severity7.0
High
EPSS probability0.07%
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 Imagination Technologies PowerVR GPU for Android SoCs allows local users to escalate privileges via a list-removal race. The dllist_remove_node function removes a list node without sufficient synchronization, so concurrent execution can access freed memory. A low-privileged local process must win the race; no user interaction or additional execution privileges are required.

The record

CVE
CVE-2021-0696
Published
Oct 11, 2022
Updated
Aug 3, 2024
Vendor
Imagination Technologies
Product
PowerVR GPU
Classifications
CWE-416, CWE-362, T1068
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

7.0NIST NVDCVSS:3.1/AV:L/AC:H/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-416Use After Free
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1068Exploitation for Privilege Escalation

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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