CVE-2022-20592

Local information disclosure via improper secure-buffer validation

Published Dec 16, 2022 · Updated Apr 18, 2025

Improper input validation in the Android kernel allows local users to disclose information through ppmp_validate_secbuf in drm_fw.c. The ppmp_validate_secbuf function in drm_fw.c improperly validates secure-buffer input; Google has not published the exact unchecked field or read operation. Exploitation requires low-privilege local access on an affected Pixel device, needs no user interaction, and is limited to information disclosure.

CVSS severity5.5
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

Improper input validation in the Android kernel allows local users to disclose information through ppmp_validate_secbuf in drm_fw.c. The ppmp_validate_secbuf function in drm_fw.c improperly validates secure-buffer input; Google has not published the exact unchecked field or read operation. Exploitation requires low-privilege local access on an affected Pixel device, needs no user interaction, and is limited to information disclosure.

The record

CVE
CVE-2022-20592
Published
Dec 16, 2022
Updated
Apr 18, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-20
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 18, 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 kernel

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=Android kernel

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

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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