In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix NULL pointer dereference of mgmtchann mgmtchann may be set to NULL if the firmware returns an unexpected error in aie2sendmgmtmsgwait(). This can later lead to a NULL pointer dereference in aie2hwstop(). Fix this by introducing a dedicated helper to destroy mgmt_chann and by adding proper NULL checks before accessing it.