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CVE-2021-0399

HighPublished

In qtaguid_untag of xt_qtaguid.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no...

Published: Mar 10, 2021
Updated: Aug 3, 2024
Assigning CNA: google_android
Evidence observed: Aug 8, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.4%

Low · next 30 days

Percentile: 32.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

In qtaguid_untag of xt_qtaguid.c, there is a possible memory corruption due to a use after free. 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-176919394References: Upstream kernel

Sources

Exploiting-UAF-by-Ret2bpf-in-Android-Kernel-CVE-2021-0399-Exploit

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