linux-cve-announce - CVE-2022-49231: rtw88: fix memory overrun and memory leak during hw

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Message-ID: <2025022623-CVE-2022-49231-88de@gregkh>
Date: Wed, 26 Feb 2025 02:57:16 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49231: rtw88: fix memory overrun and memory leak during hw_scan

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

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

rtw88: fix memory overrun and memory leak during hw_scan

Previously we allocated less memory than actual required, overwrite
to the buffer causes the mm module to complaint and raise access
violation faults. Along with potential memory leaks when returned
early. Fix these by passing the correct size and proper deinit flow.

The Linux kernel CVE team has assigned CVE-2022-49231 to this issue.


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

	Issue introduced in 5.17 with commit 10d162b2ed395e69720926b4f8d87f1f25ca920f and fixed in 5.17.2 with commit ec5da191bfcd5fd22b95459b623694f66c1cc10b
	Issue introduced in 5.17 with commit 10d162b2ed395e69720926b4f8d87f1f25ca920f and fixed in 5.18 with commit d95984b5580dcb8b1c0036577c52b609990a1dab

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-2022-49231
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/net/wireless/realtek/rtw88/fw.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/ec5da191bfcd5fd22b95459b623694f66c1cc10b
	https://git.kernel.org/stable/c/d95984b5580dcb8b1c0036577c52b609990a1dab