From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-cve-announce@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@kernel.org>
Subject: CVE-2026-90357: wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
Date: Thu, 17 Sep 2026 17:13:07 +0100 [thread overview]
Message-ID: <2026091705-CVE-2026-90357-454b@gregkh> (raw)
From: Greg Kroah-Hartman <gregkh@kernel.org>
Description
===========
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
The flow is added to dev->twt_list before sending the agreement to the
firmware, but the error path leaves it linked while flowid_mask is
never set. The flow slot can then be reused and memset while still on
the list, corrupting twt_list, and station removal leaves a dangling
entry behind that mt7915_mac_twt_sched_list_add() later walks.
The Linux kernel CVE team has assigned CVE-2026-90357 to this issue.
Affected and fixed versions
===========================
Issue introduced in 5.16 with commit 3782b69d03e714b8ff98b84c7426d8cef0e64d7c and fixed in 6.1.188 with commit c09d1b15ed2dc49060303b16a296b7b8b7794cbe
Issue introduced in 5.16 with commit 3782b69d03e714b8ff98b84c7426d8cef0e64d7c and fixed in 6.6.157 with commit 1bd5c4ed2b9045faf83315c54cd37a9b7c71b5c7
Issue introduced in 5.16 with commit 3782b69d03e714b8ff98b84c7426d8cef0e64d7c and fixed in 6.12.110 with commit cabe239e95b4eebf5b6c3654087b66ff9425bc7b
Issue introduced in 5.16 with commit 3782b69d03e714b8ff98b84c7426d8cef0e64d7c and fixed in 6.18.52 with commit 6bce0f1280c94af8314f895f404629da09f0788c
Issue introduced in 5.16 with commit 3782b69d03e714b8ff98b84c7426d8cef0e64d7c and fixed in 7.2.6 with commit beaa42b875965dbc3e80e46970e0bfa60a94c2db
Issue introduced in 5.16 with commit 3782b69d03e714b8ff98b84c7426d8cef0e64d7c and fixed in 7.3-rc1 with commit 16a04441eab0dcd4d7126a6f66b370adbf28f96d
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-2026-90357
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/mediatek/mt76/mt7915/mac.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/c09d1b15ed2dc49060303b16a296b7b8b7794cbe
https://git.kernel.org/stable/c/1bd5c4ed2b9045faf83315c54cd37a9b7c71b5c7
https://git.kernel.org/stable/c/cabe239e95b4eebf5b6c3654087b66ff9425bc7b
https://git.kernel.org/stable/c/6bce0f1280c94af8314f895f404629da09f0788c
https://git.kernel.org/stable/c/beaa42b875965dbc3e80e46970e0bfa60a94c2db
https://git.kernel.org/stable/c/16a04441eab0dcd4d7126a6f66b370adbf28f96d
reply other threads:[~2026-09-17 16:27 UTC|newest]
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