From: Johannes Berg <johannes@sipsolutions.net>
To: Jeongjun Park <aha310510@gmail.com>
Cc: linux-wireless@vger.kernel.org,
syzbot+81cd9dc1596563141d19@syzkaller.appspotmail.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] wifi: mac80211: fix NULL pointer dereference in ieee80211_mesh_build_beacon()
Date: Tue, 20 Jan 2026 09:12:31 +0100 [thread overview]
Message-ID: <35581fc687d151b2b4fabccb6952d567cac65240.camel@sipsolutions.net> (raw)
In-Reply-To: <20260119150031.201832-1-aha310510@gmail.com> (sfid-20260119_160223_485174_E37F681D)
On Tue, 2026-01-20 at 00:00 +0900, Jeongjun Park wrote:
> NULL pointer dereference bug occurs because ieee80211_mesh_build_beacon()
> does not check the return value of ieee80211_get_sband().
>
> Therefore, we need to add a return value check to prevent this.
No we don't, please try to understand the code, and why it can even get
here when the mesh interface isn't operating.
johannes
prev parent reply other threads:[~2026-01-20 8:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-19 15:00 Jeongjun Park
2026-01-20 8:12 ` Johannes Berg [this message]
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