linux-cve-announce - CVE-2022-50469: staging: rtl8723bs: fix potential memory leak in rtw_init_drv

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Message-ID: <2025100122-CVE-2022-50469-bbc4@gregkh>
Date: Wed,  1 Oct 2025 13:45:39 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50469: staging: rtl8723bs: fix potential memory leak in rtw_init_drv_sw()

From: Greg Kroah-Hartman <gregkh@...nel.org>

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

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

staging: rtl8723bs: fix potential memory leak in rtw_init_drv_sw()

In rtw_init_drv_sw(), there are various init functions are called to
populate the padapter structure and some checks for their return value.
However, except for the first one error path, the other five error paths
do not properly release the previous allocated resources, which leads to
various memory leaks.

This patch fixes them and keeps the success and error separate.
Note that these changes keep the form of `rtw_init_drv_sw()` in
"drivers/staging/r8188eu/os_dep/os_intfs.c". As there is no proper device
to test with, no runtime testing was performed.

The Linux kernel CVE team has assigned CVE-2022-50469 to this issue.


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

	Fixed in 5.15.75 with commit b4573a2bad3c3e2643ef3939079eb7035a30e6ee
	Fixed in 5.19.17 with commit 6b2052b365f8035ab7f09ac24b5b499002b298cb
	Fixed in 6.0.3 with commit d95d1526d9f06978c1a7186810a5490d72c62742
	Fixed in 6.1 with commit 5a5aa9cce621e2c0e25a1e5d72d6be1749167cc0

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-2022-50469
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/staging/rtl8723bs/os_dep/os_intfs.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/b4573a2bad3c3e2643ef3939079eb7035a30e6ee
	https://git.kernel.org/stable/c/6b2052b365f8035ab7f09ac24b5b499002b298cb
	https://git.kernel.org/stable/c/d95d1526d9f06978c1a7186810a5490d72c62742
	https://git.kernel.org/stable/c/5a5aa9cce621e2c0e25a1e5d72d6be1749167cc0