摘要:

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:
[<ffffffffb324f557&gt;] __kmalloc+0x47/0x120
[<ffffffffb39ef37d&gt;] hci_codec_list_add.isra.0+0x2d/0x160
[<ffffffffb39ef643&gt;] hci_read_codec_capabilities+0x183/0x270
[<ffffffffb39ef9ab&gt;] hci_read_supported_codecs+0x1bb/0x2d0
[<ffffffffb39f162e&gt;] hci_read_local_codecs_sync+0x3e/0x60
[<ffffffffb39ff1b3&gt;] hci_dev_open_sync+0x943/0x11e0
[<ffffffffb396d55d&gt;] hci_power_on+0x10d/0x3f0
[<ffffffffb30c99b4&gt;] process_one_work+0x404/0x800
[<ffffffffb30ca134&gt;] worker_thread+0x374/0x670
[<ffffffffb30d9108&gt;] kthread+0x188/0x1c0
[<ffffffffb304db6b&gt;] ret_from_fork+0x2b/0x50
[<ffffffffb300206a&gt;] ret_from_fork_asm+0x1a/0x30

安全等级: Low

公告ID: KylinSec-SA-2024-1612

发布日期: 2024年5月27日

关联CVE: CVE-2023-52518