CVE-2022-46395 Use after free in n/a
A non-privileged user can exploit a use-after-free in the Arm Mali GPU driver to gain elevated privileges or execute code on Android devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-46395?
CVE-2022-46395 is a high-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 6 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in the Arm Mali GPU Kernel Driver. A non-privileged user can make improper GPU processing operations to gain access to already freed memory. This affects Midgard r0p0 through r32p0, Bifrost r0p0 through r41p0 before r42p0, Valhall r19p0 through r41p0 before r42p0, and Avalon r41p0 before r42p0.
Weakness: CWE-416
Which versions are affected by CVE-2022-46395?
It affects 4 products.
Products include Arm Avalon Gpu Kernel Driver, Arm Bifrost Gpu Kernel Driver, Arm Midgard Gpu Kernel Driver, Arm Valhall Gpu Kernel Driver.
How do I fix CVE-2022-46395?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2022-46395 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-46395 exists.
Public exploit code: 4 proofs of concept on GitHub.
Other vulnerabilities in Arm Valhall Gpu Kernel Driver
Sources
Also known as A-267357916, ASB-A-267357916, GHSA-fpqq-p5q5-4fhw.