CVE-2021-39802

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

In change_pte_range of mprotect.c , there is a possible way to make a shared mmap writable due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-213339151References: Upstream kernel

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-863

Affected software

VendorProductVersions
n/aAndroidAndroid kernel

References

Timeline

Published
Apr 12, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-39802: High severity, CVSS 7.8 | Vulnix