CVE-2021-40037 Memory corruption in EMUI
A type confusion vulnerability in the MPTCP subsystem allows attackers to crash and restart Huawei smartphones.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40037?
CVE-2021-40037 is a medium-severity memory corruption vulnerability in Huawei Emui, published on 7 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
There is a Vulnerability of accessing resources using an incompatible type (type confusion) in the MPTCP subsystem in smartphones. Successful exploitation of this vulnerability may cause the system to crash and restart.
Weakness: CWE-843
Which versions are affected by CVE-2021-40037?
It affects 3 products.
Products include Huawei Emui, Huawei Harmonyos, Huawei Magic Ui.
How do I fix CVE-2021-40037?
No fix has been published for CVE-2021-40037 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-40037 being exploited?
There is no known exploitation of CVE-2021-40037 in the wild and no public exploit code.
Other vulnerabilities in Huawei Emui
Sources
Also known as GHSA-gg65-289v-hp7m.