In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_codec: Fix leaking content of local_codecs
The following memory leak can be observed when the controller supports codecs which are stored in local_codecs list but the elements are never freed:
unreferenced object 0xffff88800221d840 (size 32): comm kworker/u3:0, pid 36, jiffies 4294898739 (age 127.060s) hex dump (first 32 bytes): f8 d3 02 03 80 88 ff ff 80 d8 21 02 80 88 ff ff ……….!….. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ……………. backtrace: [] __kmalloc+0x47/0x120 [] hci_codec_list_add.isra.0+0x2d/0x160 [] hci_read_codec_capabilities+0x183/0x270 [] hci_read_supported_codecs+0x1bb/0x2d0 [] hci_read_local_codecs_sync+0x3e/0x60 [] hci_dev_open_sync+0x943/0x11e0 [] hci_power_on+0x10d/0x3f0 [] process_one_work+0x404/0x800 [] worker_thread+0x374/0x670 [] kthread+0x188/0x1c0 [] ret_from_fork+0x2b/0x50 [] ret_from_fork_asm+0x1a/0x30