Use after free vulnerability in dsp_context_unload_graph function of DSP driver prior to SMR Apr-2022 Release 1 allows attackers to perform malicious actions.
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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://security.samsungmobile.com/securityUpdate.smsb?year=2022&month=4 | vendor advisory |