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 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: [<ffffffffb324f557>] _kmalloc+0x47/0x120 [<ffffffffb39ef37d>] hcicodeclistadd.isra.0+0x2d/0x160 [<ffffffffb39ef643>] hcireadcodeccapabilities+0x183/0x270 [<ffffffffb39ef9ab>] hcireadsupportedcodecs+0x1bb/0x2d0 [<ffffffffb39f162e>] hcireadlocalcodecssync+0x3e/0x60 [<ffffffffb39ff1b3>] hcidevopensync+0x943/0x11e0 [<ffffffffb396d55d>] hcipoweron+0x10d/0x3f0 [<ffffffffb30c99b4>] processonework+0x404/0x800 [<ffffffffb30ca134>] workerthread+0x374/0x670 [<ffffffffb30d9108>] kthread+0x188/0x1c0 [<ffffffffb304db6b>] retfromfork+0x2b/0x50 [<ffffffffb300206a>] retfromfork_asm+0x1a/0x30