CVE-2021-39973 Null dereference in EMUI

What is CVE-2021-39973?

CVE-2021-39973 is a high-severity vulnerability in Huawei Emui, published on 3 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

There is a Null pointer dereference in Smartphones.Successful exploitation of this vulnerability may cause the kernel to break down.

Weakness: CWE-476

Which versions are affected by CVE-2021-39973?

It affects 3 products.

Products include Huawei Emui, Huawei Harmonyos, Huawei Magic Ui.

How do I fix CVE-2021-39973?

No fix has been published for CVE-2021-39973 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-39973 being exploited?

There is no known exploitation of CVE-2021-39973 in the wild and no public exploit code.

Other vulnerabilities in Huawei Emui

• CVE-2023-52370 Memory corruption in EMUI Critical 9.8
• CVE-2023-52378 Business logic in EMUI Critical 9.8
• CVE-2023-52381 Code injection in EMUI Critical 9.8
• CVE-2023-52103 Memory corruption in EMUI Critical 9.8
• CVE-2023-46773 Privilege escalation in EMUI Critical 9.8

All Huawei Emui vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-445h-32ch-3r5v.