What’s Vulnerable › Vulnerabilities

CVE-2021-39802

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-12 · updated 2026-06-17
• Weakness: CWE-863

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

Affected products

• Android: all versions

References

• https://source.android.com/security/bulletin/2022-04-01
• https://source.android.com/security/bulletin/2022-04-01

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