CVE-2021-0885Public exploit

Local privilege escalation via unchecked buffer-size arithmetic

Published Apr 19, 2023 · Updated Feb 5, 2025

Integer overflow in the PowerVR kernel driver on Android SoC devices allows local users to escalate privileges without user interaction. The PVRSRVBridgeSyncPrimOpTake handler calculates a 32-bit allocation size from user-controlled sync counts without checking for wraparound, so it can allocate an undersized heap buffer and access memory out of bounds. Low-privileged local access to an affected device is required, and successful exploitation crosses the kernel privilege boundary.

CVSS severity7.8
High
EPSS probability0.09%
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 the PowerVR kernel driver on Android SoC devices allows local users to escalate privileges without user interaction. The PVRSRVBridgeSyncPrimOpTake handler calculates a 32-bit allocation size from user-controlled sync counts without checking for wraparound, so it can allocate an undersized heap buffer and access memory out of bounds. Low-privileged local access to an affected device is required, and successful exploitation crosses the kernel privilege boundary.

The record

CVE
CVE-2021-0885
Published
Apr 19, 2023
Updated
Feb 5, 2025
Vendor
Imagination Technologies
Product
PowerVR GPU
Classifications
CWE-190, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 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=Android SoC

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Imagination Technologies · PowerVR GPUversion=Android SoC

Published CVSS scores

7.8GitHub Advisory DatabaseCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1068Exploitation for Privilege Escalation

Public exploit references

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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