linux-cve-announce - CVE-2024-35963: Bluetooth: hci_sock: Fix not validating setsockopt user input

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Message-ID: <2024052021-CVE-2024-35963-7934@gregkh>
Date: Mon, 20 May 2024 11:42:28 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-35963: Bluetooth: hci_sock: Fix not validating setsockopt user input

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

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

Bluetooth: hci_sock: Fix not validating setsockopt user input

Check user input length before copying data.

The Linux kernel CVE team has assigned CVE-2024-35963 to this issue.


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

	Issue introduced in 5.16 with commit 09572fca7223 and fixed in 6.8.7 with commit 50173882bb18
	Issue introduced in 5.16 with commit 09572fca7223 and fixed in 6.9 with commit b2186061d604

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-2024-35963
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_sock.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/50173882bb187e70e37bac01385b9b114019bee2
	https://git.kernel.org/stable/c/b2186061d6043d6345a97100460363e990af0d46