ASLR bypass via kernel pointers in logs
Published May 4, 2023 · Updated Oct 21, 2025
Information exposure in Samsung Mobile Devices on selected Android 11, 12, and 13 devices allows local users to bypass ASLR. The kernel writes pointer values into a log file, exposing memory addresses that defeat address-space randomization. Reading the log requires privileged local access; the flaw discloses addresses but does not itself modify data or execute code.
Summary
What happened
Information exposure in Samsung Mobile Devices on selected Android 11, 12, and 13 devices allows local users to bypass ASLR. The kernel writes pointer values into a log file, exposing memory addresses that defeat address-space randomization. Reading the log requires privileged local access; the flaw discloses addresses but does not itself modify data or execute code.
The record
- CVE
- CVE-2023-21492
- Published
- May 4, 2023
- Updated
- Oct 21, 2025
- Vendor
- Samsung Electronics Co., Ltd.
- Product
- Samsung Mobile Devices
- Classifications
- CWE-532
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- May 4, 2023CVE publishedPublication date reported by the CVE source.
- May 19, 2023Exploitation reportedCISA Known Exploited Vulnerabilities entry
- Oct 21, 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.
- Affected versionversion=Selected Android 11, 12, 13 devices <SMR May-2023 Release 1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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.
Reported exploitation
- Samsung in-the-wild exploit notificationreported exploitation
- CISA Known Exploited Vulnerabilities entryknown exploited catalog
Technologies
Your stack
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Your stack
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