linux-cve-announce - CVE-2024-56757: Bluetooth: btusb: mediatek: add intf release flow when usb disconnect

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Message-ID: <2025010651-CVE-2024-56757-c26b@gregkh>
Date: Mon,  6 Jan 2025 17:20:51 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-56757: Bluetooth: btusb: mediatek: add intf release flow when usb disconnect

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: btusb: mediatek: add intf release flow when usb disconnect

MediaTek claim an special usb intr interface for ISO data transmission.
The interface need to be released before unregistering hci device when
usb disconnect. Removing BT usb dongle without properly releasing the
interface may cause Kernel panic while unregister hci device.

The Linux kernel CVE team has assigned CVE-2024-56757 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.12.8 with commit cc569d791ab2a0de74f76e470515d25d24c9b84b
	Fixed in 6.13-rc1 with commit 489304e67087abddc2666c5af0159cb95afdcf59

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2024-56757
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/bluetooth/btusb.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/cc569d791ab2a0de74f76e470515d25d24c9b84b
	https://git.kernel.org/stable/c/489304e67087abddc2666c5af0159cb95afdcf59