linux-cve-announce - CVE-2025-21828: wifi: mac80211: don't flush non-uploaded STAs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025030630-CVE-2025-21828-cb05@gregkh>
Date: Thu,  6 Mar 2025 17:04:33 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2025-21828: wifi: mac80211: don't flush non-uploaded STAs

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

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

wifi: mac80211: don't flush non-uploaded STAs

If STA state is pre-moved to AUTHORIZED (such as in IBSS
scenarios) and insertion fails, the station is freed.
In this case, the driver never knew about the station,
so trying to flush it is unexpected and may crash.

Check if the sta was uploaded to the driver before and
fix this.

The Linux kernel CVE team has assigned CVE-2025-21828 to this issue.


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

	Issue introduced in 6.4 with commit d00800a289c9349bb659a698cbd7bc04521dc927 and fixed in 6.6.76 with commit cf21ef3d430847ba864bbc9b2774fffcc03ce321
	Issue introduced in 6.4 with commit d00800a289c9349bb659a698cbd7bc04521dc927 and fixed in 6.12.13 with commit cd10b7fcb95a6a86c67adc54304c59a578ab16af
	Issue introduced in 6.4 with commit d00800a289c9349bb659a698cbd7bc04521dc927 and fixed in 6.13.2 with commit 9efb5531271fa7ebae993b2a33a705d9947c7ce6
	Issue introduced in 6.4 with commit d00800a289c9349bb659a698cbd7bc04521dc927 and fixed in 6.14-rc1 with commit aa3ce3f8fafa0b8fb062f28024855ea8cb3f3450

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-2025-21828
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:
	net/mac80211/driver-ops.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/cf21ef3d430847ba864bbc9b2774fffcc03ce321
	https://git.kernel.org/stable/c/cd10b7fcb95a6a86c67adc54304c59a578ab16af
	https://git.kernel.org/stable/c/9efb5531271fa7ebae993b2a33a705d9947c7ce6
	https://git.kernel.org/stable/c/aa3ce3f8fafa0b8fb062f28024855ea8cb3f3450