kernel: Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecs

A flaw was found in the Linux kernel's Bluetooth Host Controller Interface HCI component. A null pointer dereference occurs in the hcireadsupportedcodecs function because hcicmdsyncsk incorrectly returns a NULL value for unknown opcodes. A local attacker with low privileges could exploit this...

UBUNTU-CVE-2023-52518

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicodec: Fix leaking content of localcodecs The following memory leak can be observed when the controller supports codecs which are stored in localcodecs list but the elements are never freed: unreferenced object...