Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel Driver, Arm Ltd Valhall GPU Kernel Driver allows a local non-privileged user to make improper memory processing operations to exploit a software race condition. If the system’s memory is carefully prepared by the user, then this in turn cause a use-after-free.This issue affects Bifrost GPU Kernel Driver: from r35p0 through r40p0; Valhall GPU Kernel Driver: from r35p0 through r40p0.
Solution:
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities | vendor advisory |