From: Will Deacon <will@kernel.org>
To: gregkh@linuxfoundation.org
Cc: stable@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@android.com, g.nault@alphalink.fr,
Will Deacon <will@kernel.org>
Subject: [PATCH 0/2] [backports] l2tp use-after-free fixes for 4.9 stable
Date: Thu, 2 Apr 2020 18:31:56 +0100 [thread overview]
Message-ID: <20200402173158.7798-1-will@kernel.org> (raw)
Hi Greg,
Syzbot has been complaining about KASAN splats due to use-after-free
issues in the l2tp code on 4.9 Android kernels (although I reproduced
with latest 4.9 stable on my laptop):
https://syzkaller.appspot.com/bug?id=3c27eae7bdba97293b68e79c9700ac110f977eed
These have been fixed upstream, but for some reason didn't get picked up
for stable. This series applies to 4.9.y and I'll send patches for 4.4.y
separately as there are a few dependencies to deal with over there.
Thanks,
Will
--->8
Guillaume Nault (2):
l2tp: ensure sessions are freed after their PPPOL2TP socket
l2tp: fix race between l2tp_session_delete() and
l2tp_tunnel_closeall()
net/l2tp/l2tp_core.c | 6 ++++++
net/l2tp/l2tp_core.h | 1 +
net/l2tp/l2tp_ppp.c | 8 ++++----
3 files changed, 11 insertions(+), 4 deletions(-)
--
2.26.0.rc2.310.g2932bb562d-goog
next reply other threads:[~2020-04-02 17:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-02 17:31 Will Deacon [this message]
2020-04-02 17:31 ` [PATCH 1/2] l2tp: ensure sessions are freed after their PPPOL2TP socket Will Deacon
2020-04-02 19:59 ` David Miller
2020-04-03 7:03 ` Will Deacon
2020-04-02 17:31 ` [PATCH 2/2] l2tp: fix race between l2tp_session_delete() and l2tp_tunnel_closeall() Will Deacon
2020-04-02 18:45 ` [PATCH 0/2] [backports] l2tp use-after-free fixes for 4.9 stable Greg KH
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