Local information disclosure via unchecked buffer read
Published Mar 16, 2022 · Updated Aug 4, 2024
Out-of-bounds read in Google Pixel Bootloader allows local users with System privileges to disclose information without user interaction. Google has not disclosed the affected function or input, stating only that a missing bounds check permits the bootloader to read beyond a buffer. Exploitation requires local System execution privileges and affects confidentiality only; the private bug record prevents tighter scoping of exposed data.
Summary
What happened
Out-of-bounds read in Google Pixel Bootloader allows local users with System privileges to disclose information without user interaction. Google has not disclosed the affected function or input, stating only that a missing bounds check permits the bootloader to read beyond a buffer. Exploitation requires local System execution privileges and affects confidentiality only; the private bug record prevents tighter scoping of exposed data.
The record
- CVE
- CVE-2021-39730
- Published
- Mar 16, 2022
- Updated
- Aug 4, 2024
- Vendor
- Product
- Pixel Bootloader
- Classifications
- CWE-125, T1005
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Mar 16, 2022CVE publishedPublication date reported by the CVE source.
- Aug 4, 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?
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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.
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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