Description

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix potential NULL pointer dereference in context cleanup aie_destroy_context() is invoked during error handling in aie2_create_context(). However, aie_destroy_context() assumes that the context's mailbox channel pointer is non-NULL. If mailbox channel creation fails, the pointer remains NULL and calling aie_destroy_context() can lead to a NULL pointer dereference. In aie2_create_context(), replace aie_destroy_context() with a function which request firmware to remove the context created previously.

References 2

• git.kernel.org https://git.kernel.org/stable/c/2611c9616cb52d3ed54a6095d72d18e645a6955a
• git.kernel.org https://git.kernel.org/stable/c/97f27573837ef96b4ba42af463cc800cab615c0e

Remediation