linux-cve-announce - CVE-2024-56591: Bluetooth: hci_conn: Use disable_delayed_work

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Message-ID: <2024122759-CVE-2024-56591-eaf9@gregkh>
Date: Fri, 27 Dec 2024 15:50:58 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-56591: Bluetooth: hci_conn: Use disable_delayed_work_sync

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

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

Bluetooth: hci_conn: Use disable_delayed_work_sync

This makes use of disable_delayed_work_sync instead
cancel_delayed_work_sync as it not only cancel the ongoing work but also
disables new submit which is disarable since the object holding the work
is about to be freed.

The Linux kernel CVE team has assigned CVE-2024-56591 to this issue.


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

	Fixed in 6.12.5 with commit c55a4c5a04bae40dcdc1e1c19d8eb79a06fb3397
	Fixed in 6.13-rc1 with commit 2b0f2fc9ed62e73c95df1fa8ed2ba3dac54699df

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-2024-56591
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:
	net/bluetooth/hci_conn.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/c55a4c5a04bae40dcdc1e1c19d8eb79a06fb3397
	https://git.kernel.org/stable/c/2b0f2fc9ed62e73c95df1fa8ed2ba3dac54699df