CVE-2021-28664 Arm Mali Graphics Processing Unit (GPU) Unspecified
Unprivileged users can exploit memory corruption in the Arm Mali GPU kernel driver to escalate privileges or cause denial of service on Android devices.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-28664?
CVE-2021-28664 is a high-severity memory corruption vulnerability in Arm Valhall Gpu Kernel Driver, published on 10 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Arm Mali GPU kernel driver allows privilege escalation or a denial of service (memory corruption) because an unprivileged user can achieve read/write access to read-only pages. This affects Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r8p0 through r30p0 before r31p0.
Weakness: CWE-787
Which versions are affected by CVE-2021-28664?
It affects 3 products.
Products include Arm Bifrost Gpu Kernel Driver, Arm Midgard Gpu Kernel Driver, Arm Valhall Gpu Kernel Driver.
How do I fix CVE-2021-28664?
Apply the vendor's patch. US federal agencies must fix it by 17 Nov 2021.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-28664 being exploited?
Yes. Attackers have exploited CVE-2021-28664 in the wild since at least 3 Nov 2021.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Arm Valhall Gpu Kernel Driver
Sources
Also known as A-174588870, ASB-A-174588870, GHSA-w62f-9gm7-596f.