linux-cve-announce - CVE-2024-43842: wifi: rtw89: Fix array index mistake in rtw89_sta_info_get

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Message-ID: <2024081730-CVE-2024-43842-31e7@gregkh>
Date: Sat, 17 Aug 2024 11:22:46 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-43842: wifi: rtw89: Fix array index mistake in rtw89_sta_info_get_iter()

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

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

wifi: rtw89: Fix array index mistake in rtw89_sta_info_get_iter()

In rtw89_sta_info_get_iter() 'status->he_gi' is compared to array size.
But then 'rate->he_gi' is used as array index instead of 'status->he_gi'.
This can lead to go beyond array boundaries in case of 'rate->he_gi' is
not equal to 'status->he_gi' and is bigger than array size. Looks like
"copy-paste" mistake.

Fix this mistake by replacing 'rate->he_gi' with 'status->he_gi'.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

The Linux kernel CVE team has assigned CVE-2024-43842 to this issue.


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

	Issue introduced in 5.16 with commit e3ec7017f6a2 and fixed in 6.1.103 with commit a2a095c08b95
	Issue introduced in 5.16 with commit e3ec7017f6a2 and fixed in 6.6.44 with commit 7a0edc3d83af
	Issue introduced in 5.16 with commit e3ec7017f6a2 and fixed in 6.10.3 with commit 96ae4de5bc4c
	Issue introduced in 5.16 with commit e3ec7017f6a2 and fixed in 6.11-rc1 with commit 85099c7ce4f9

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-2024-43842
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/rtw89/debug.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/a2a095c08b95372d6d0c5819b77f071af5e75366
	https://git.kernel.org/stable/c/7a0edc3d83aff3a48813d78c9cad9daf38decc74
	https://git.kernel.org/stable/c/96ae4de5bc4c8ba39fd072369398f59495b73f58
	https://git.kernel.org/stable/c/85099c7ce4f9e64c66aa397cd9a37473637ab891