CVE-2021-39793 Google Pixel Out-of-Bounds Write
A logic error in the Android kernel's Mali GPU driver allows local attackers to perform an out-of-bounds write, leading to privilege escalation.
- Exploited in the wild
- Since 11 Apr 2022
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-39793?
CVE-2021-39793 is a high-severity memory corruption vulnerability in Google Android, published on 16 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In kbase_jd_user_buf_pin_pages of mali_kbase_mem.c, there is a possible out of bounds write due to a logic error in the code. 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-210470189References: N/A
Weakness: CWE-787
Which versions are affected by CVE-2021-39793?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-39793?
Apply the vendor's patch. US federal agencies must fix it by 2 May 2022.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-39793 being exploited?
Yes. Attackers have exploited CVE-2021-39793 in the wild since at least 11 Apr 2022.
Other vulnerabilities in Google Android
Sources
Also known as A-210470189, GHSA-mx45-vcw4-89j8, PUB-A-210470189.