CVE-2021-39633 Information disclosure in Android
A local attacker can exploit an invalid memory access in the Android kernel to disclose sensitive information without user interaction or elevated privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-39633?
CVE-2021-39633 is a medium-severity vulnerability in Google Android, published on 14 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In gre_handle_offloads of ip_gre.c, there is a possible page fault due to an invalid memory access. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-150694665References: Upstream kernel
Weakness: CWE-119
Which versions are affected by CVE-2021-39633?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-39633?
Apply the vendor's patch.
Is CVE-2021-39633 being exploited?
There is no known exploitation of CVE-2021-39633 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-150694665, ASB-A-150694665, DEBIAN-CVE-2021-39633, GHSA-2829-f4q2-487p, UBUNTU-CVE-2021-39633.