Local information disclosure via unchecked Wi-Fi event length
Published Mar 24, 2023 · Updated Feb 24, 2025
Out-of-bounds read in the Wi-Fi kernel component of Google Pixel devices allows local users with System privileges to disclose memory. The handleEvent function in nan.cpp processes an event without checking its bounds, allowing a read beyond the intended buffer. Exploitation requires local code already running with System privileges, needs no user interaction, and affects confidentiality without altering data or interrupting service.
Summary
What happened
Out-of-bounds read in the Wi-Fi kernel component of Google Pixel devices allows local users with System privileges to disclose memory. The handleEvent function in nan.cpp processes an event without checking its bounds, allowing a read beyond the intended buffer. Exploitation requires local code already running with System privileges, needs no user interaction, and affects confidentiality without altering data or interrupting service.
The record
- CVE
- CVE-2023-21048
- Published
- Mar 24, 2023
- Updated
- Feb 24, 2025
- Vendor
- Product
- Google Pixel
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Mar 24, 2023CVE publishedPublication date reported by the CVE source.
- Feb 24, 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?
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- Affected versionversion=Android kernel
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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