Subject: CVE-2024-47721: wifi: rtw89: remove unused C2H event ID RTW89_MAC_C2H_FUNC_READ_WOW_CAM to prevent out-of-bounds reading

From: Greg Kroah-Hartman <[email-masked]>

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

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

wifi: rtw89: remove unused C2H event ID RTW89_MAC_C2H_FUNC_READ_WOW_CAM to prevent out-of-bounds reading

The handler of firmware C2H event RTW89_MAC_C2H_FUNC_READ_WOW_CAM isn't
implemented, but driver expects number of handlers is
NUM_OF_RTW89_MAC_C2H_FUNC_WOW causing out-of-bounds access. Fix it by
removing ID.

Addresses-Coverity-ID: 1598775 ("Out-of-bounds read")

The Linux kernel CVE team has assigned CVE-2024-47721 to this issue.

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

	Issue introduced in 6.10 with commit ff53fce5c78b and fixed in 6.10.13 with commit 10463308b945
	Issue introduced in 6.10 with commit ff53fce5c78b and fixed in 6.11.2 with commit 2c9c2d1a2091
	Issue introduced in 6.10 with commit ff53fce5c78b and fixed in 6.12-rc1 with commit 56310ddb50b1

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-2024-47721
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/mac.h

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/10463308b9454f534d03300cf679bc4b3d078f46
	https://git.kernel.org/stable/c/2c9c2d1a20916589497a7facbea3e82cabec4ab8
	https://git.kernel.org/stable/c/56310ddb50b190b3390fdc974aec455d0a516bd2