linux-cve-announce - CVE-2023-53018: Bluetooth: hci

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Message-ID: <2025032717-CVE-2023-53018-c89c@gregkh>
Date: Thu, 27 Mar 2025 17:44:05 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2023-53018: Bluetooth: hci_conn: Fix memory leaks

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

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

Bluetooth: hci_conn: Fix memory leaks

When hci_cmd_sync_queue() failed in hci_le_terminate_big() or
hci_le_big_terminate(), the memory pointed by variable d is not freed,
which will cause memory leak. Add release process to error path.

The Linux kernel CVE team has assigned CVE-2023-53018 to this issue.


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

	Issue introduced in 6.0 with commit eca0ae4aea66914515e5e3098ea051b518ee5316 and fixed in 6.1.9 with commit f51a825b9f730a782aa768454906b4468e67b667
	Issue introduced in 6.0 with commit eca0ae4aea66914515e5e3098ea051b518ee5316 and fixed in 6.2 with commit 3aa21311f36d8a2730c7ccef37235e951f23927b

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-2023-53018
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/f51a825b9f730a782aa768454906b4468e67b667
	https://git.kernel.org/stable/c/3aa21311f36d8a2730c7ccef37235e951f23927b