CVE-2026-74413: wifi: rtw89: fix wrong pci_get_drvdata type in AER handlers

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

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

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

wifi: rtw89: fix wrong pci_get_drvdata type in AER handlers

rtw89 stores an ieee80211_hw pointer via pci_set_drvdata() at probe
time, but io_error_detected() and io_resume() retrieve it as a
net_device pointer.  This causes netif_device_detach/attach to
operate on an ieee80211_hw struct, reading and writing at wrong
offsets.  The adjacent io_slot_reset() already does it correctly.

Use ieee80211_stop_queues/wake_queues instead, consistent with
every other queue stop/start path in the driver.

Tested on RTL8852CE by calling the handlers from a test module
before and after the fix.

The Linux kernel CVE team has assigned CVE-2026-74413 to this issue.


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

	Issue introduced in 6.17 with commit 16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 and fixed in 6.18.40 with commit aefc30e4a829c1683f6ae999df7f9310c27eae6c
	Issue introduced in 6.17 with commit 16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 and fixed in 7.1.5 with commit c1907b9a4fa9cb33d11a9af138374dd2e93f7a93
	Issue introduced in 6.17 with commit 16e3d93c6183649a3b210f82b83c1cb12aa5e8a3 and fixed in 7.2-rc1 with commit 7068c379cf9aa8afe4dce4d9d82390187aa9c4d0

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-2026-74413
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/pci.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/aefc30e4a829c1683f6ae999df7f9310c27eae6c
	https://git.kernel.org/stable/c/c1907b9a4fa9cb33d11a9af138374dd2e93f7a93
	https://git.kernel.org/stable/c/7068c379cf9aa8afe4dce4d9d82390187aa9c4d0