CVE-2021-22390 Use after free in EMUI

Critical 9.8 Published 2 Aug 2021 Updated 3 Aug 2024

A use-after-free vulnerability in Huawei smartphones allows attackers to execute arbitrary code on the device.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-22390?

CVE-2021-22390 is a critical use after free vulnerability in Huawei Emui, published on 2 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

There is a Memory Buffer Improper Operation Limit Vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause certain codes to be executed.

Weakness: CWE-416

Which versions are affected by CVE-2021-22390?

It affects 2 products.

Products include Huawei Emui, Huawei Magic Ui.

How do I fix CVE-2021-22390?

No fix has been published for CVE-2021-22390 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2021-22390 being exploited?

There is no known exploitation of CVE-2021-22390 in the wild and no public exploit code.

All Huawei Emui vulnerabilities

Sources

Also known as GHSA-qv87-7p58-h9p6.