linux-cve-announce - CVE-2025-21906: wifi: iwlwifi: mvm: clean up ROC on failure

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Message-ID: <2025040129-CVE-2025-21906-de63@gregkh>
Date: Tue,  1 Apr 2025 16:39:30 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2025-21906: wifi: iwlwifi: mvm: clean up ROC on failure

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

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

wifi: iwlwifi: mvm: clean up ROC on failure

If the firmware fails to start the session protection, then we
do call iwl_mvm_roc_finished() here, but that won't do anything
at all because IWL_MVM_STATUS_ROC_P2P_RUNNING was never set.
Set IWL_MVM_STATUS_ROC_P2P_RUNNING in the failure/stop path.
If it started successfully before, it's already set, so that
doesn't matter, and if it didn't start it needs to be set to
clean up.

Not doing so will lead to a WARN_ON() later on a fresh remain-
on-channel, since the link is already active when activated as
it was never deactivated.

The Linux kernel CVE team has assigned CVE-2025-21906 to this issue.


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

	Issue introduced in 6.9 with commit 35c1bbd93c4e6969b3ac238b48a8bdff3e223ed8 and fixed in 6.12.19 with commit a88c18409b5d69f426d5acc583c053eac71756a3
	Issue introduced in 6.9 with commit 35c1bbd93c4e6969b3ac238b48a8bdff3e223ed8 and fixed in 6.13.7 with commit d1a12fcb9051bbf38b2e5af310ffb102a0fab6f9
	Issue introduced in 6.9 with commit 35c1bbd93c4e6969b3ac238b48a8bdff3e223ed8 and fixed in 6.14 with commit f9751163bffd3fe60794929829f810968c6de73d

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-2025-21906
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/intel/iwlwifi/mvm/time-event.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/a88c18409b5d69f426d5acc583c053eac71756a3
	https://git.kernel.org/stable/c/d1a12fcb9051bbf38b2e5af310ffb102a0fab6f9
	https://git.kernel.org/stable/c/f9751163bffd3fe60794929829f810968c6de73d