CVE-2021-0884

Local privilege escalation via unchecked size arithmetic

Published Apr 19, 2023 · Updated Feb 5, 2025

Integer overflow in Android SoC PowerVR kernel drivers allows local users to gain elevated privileges through out-of-bounds heap access. PVRSRVBridgePhysmemImportSparseDmaBuf fails to check a size before arithmetic, allowing the calculation to overflow and produce out-of-bounds heap access. A low-privileged local process can reach the driver without user interaction and use the resulting memory corruption to elevate privileges.

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 Android SoC PowerVR kernel drivers allows local users to gain elevated privileges through out-of-bounds heap access. PVRSRVBridgePhysmemImportSparseDmaBuf fails to check a size before arithmetic, allowing the calculation to overflow and produce out-of-bounds heap access. A low-privileged local process can reach the driver without user interaction and use the resulting memory corruption to elevate privileges.

The record

CVE
CVE-2021-0884
Published
Apr 19, 2023
Updated
Feb 5, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-190, CAPEC-92, 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?

Google Cloud · Androidversion=Android SoC

Published CVSS scores

7.8CISA-ADPCVSS: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
CAPEC-92Forced Integer Overflow
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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