CVE-2022-46891 Use after free in n/a
A non-privileged user can exploit a use-after-free in the Arm Mali GPU driver to access freed memory, potentially leading to privilege escalation or code execution.
- 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-2022-46891?
CVE-2022-46891 is a high-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 17 Jan 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. There is a use-after-free. A non-privileged user can make improper GPU processing operations to gain access to already freed memory. This affects Midgard r13p0 through r32p0, Bifrost r1p0 through r40p0, and Valhall r19p0 through r40p0.
Weakness: CWE-416
Which versions are affected by CVE-2022-46891?
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-2022-46891?
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-2022-46891 being exploited?
There is no known exploitation of CVE-2022-46891 in the wild and no public exploit code.
Other vulnerabilities in Arm Valhall Gpu Kernel Driver
- CVE-2022-38181 Arm Mali GPU Kernel Driver Use-After-Free
- CVE-2021-29256 Arm Mali GPU Kernel Driver Use-After-Free
- CVE-2021-28663 Arm Mali Graphics Processing Unit (GPU) Use-After-Free
- CVE-2021-28664 Arm Mali Graphics Processing Unit (GPU) Unspecified
- CVE-2022-22706 Arm Mali GPU Kernel Driver Unspecified
Sources
Also known as A-260149319, ASB-A-260149319, GHSA-394q-589m-ppr4.