CVE-2021-28663
HighActively exploited (CISA KEV)
Description
The Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading to a use-after-free. This affects Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Arm Mali Graphics Processing Unit (GPU)
PublishedMay 10, 2021
First seenMay 10, 2021
Added to KEVNov 3, 2021
Weakness typeCWE-416Use after free
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Nov 17, 2021Update
- arm bifrost_gpu_kernel_driverr29p0 or later
- arm midgard_gpu_kernel_driverr31p0 or later
- arm valhall_gpu_kernel_driverr29p0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| arm bifrost_gpu_kernel_driver | r0p0 ≤ v < r29p0 | r29p0 |
| arm midgard_gpu_kernel_driver | r4p0 ≤ v < r31p0 | r31p0 |
| arm valhall_gpu_kernel_driver | r19p0 ≤ v < r29p0 | r29p0 |
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