linux-kernel - [PATCH 5.10/5.15/6.1 0/1] net: prevent mss overflow in skb

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Date: Tue,  6 Feb 2024 20:38:43 +0300
From: Alexey Panov <apanov@...ralinux.ru>
To: stable@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Alexey Panov <apanov@...ralinux.ru>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Sasha Levin <sashal@...nel.org>,
	Kuniyuki Iwashima <kuniyu@...zon.com>,
	Mohamed Khalfella <mkhalfella@...estorage.com>,
	Pratyush Yadav <ptyadav@...zon.de>,
	Kees Cook <keescook@...omium.org>,
	Liang Chen <liangchen.linux@...il.com>,
	Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	lvc-project@...uxtesting.org
Subject: [PATCH 5.10/5.15/6.1 0/1] net: prevent mss overflow in skb_segment()

Syzkaller reports NULL pointer dereference issue at skb_segment()
in 5.10/5.15/6.1 stable releases. The problem has been fixed by
the following patch which can be cleanly applied to 5.10/5.15/6.1 branches.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.