From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 88D601CCB4B; Thu, 10 Apr 2025 09:40:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744278001; cv=none; b=SaEef8Jz3ExIfpWWMu286OWvNrnfENBD3xK/Pw6/q+BjnuhfQGGN+Sb4zyAfNve072RQGQVMFyeGF+0KXgWxKJub8FIbtHBDyQk9PaifzDEnKgZSpEYQUs93VsInFrh2q3fjZg7MkUBf7oFjf7NWtKA0YvODR+QyF6FFRXmYzLI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744278001; c=relaxed/simple; bh=MAu1DECHj25V6I4N9Am9XeeLIjxrKp5jFnmeWvx2Sno=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=pIhg5HTWOQV0x0cq8dhNcX5/G6+RSv8V39Uj4MX8yPIbGxWtEQr6S08vnhSgxC0La8TQkkumJXYiJHl9GNt4Pv6jqbnmiApJeevWvdvY58O6idOCtu/MZmxNZldnmUeNljxlUuH4Hisw38l5gzbGd9kepJak00OVuGfRTfW0d38= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QhUzfkxE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QhUzfkxE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00225C4CEDD; Thu, 10 Apr 2025 09:40:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744278001; bh=MAu1DECHj25V6I4N9Am9XeeLIjxrKp5jFnmeWvx2Sno=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=QhUzfkxEOHibgUPVAWs1AGISKVnTO3FCXXkAJQdhSom1zG9/DzQFT99SR2hD8pd/5 85o7+gv6v8vHX5Qsjbh94hNbd5ncG131xPxm7VR/8PLzAVJKDTE5bp3ZkK1DTR7kY1 rQQVHsJ726ZrJLem8b9U5wSaqbrysrRHo7GklQUgNdKYmOsguL+Uu6CFMlj/a5kS31 1FPpUwpOhWolFW2O7n9vgCFYpOU4y+rqvWwLTK1hyO6DIODa5EEPDD92X1LNBOQ5AU 30N3bUyY/+Ei68ISlj6MEQmyGwHIOHIJlSvI5I/RsAsNtNaKZ0N//2IQH5WoKfd6os PlbQtgNw1GqzQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id AF957380CEF4; Thu, 10 Apr 2025 09:40:39 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH v2] net: ppp: Add bound checking for skb d on ppp_sync_txmung From: patchwork-bot+netdevbpf@kernel.org Message-Id: <174427803852.3591786.2538899437111580046.git-patchwork-notify@kernel.org> Date: Thu, 10 Apr 2025 09:40:38 +0000 References: <20250408-bound-checking-ppp_txmung-v2-1-94bb6e1b92d0@arnaud-lcm.com> In-Reply-To: <20250408-bound-checking-ppp_txmung-v2-1-94bb6e1b92d0@arnaud-lcm.com> To: Arnaud Lecomte Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux-ppp@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, skhan@linuxfoundation.org, syzbot+29fc8991b0ecb186cf40@syzkaller.appspotmail.com Hello: This patch was applied to netdev/net.git (main) by Paolo Abeni : On Tue, 08 Apr 2025 17:55:08 +0200 you wrote: > Ensure we have enough data in linear buffer from skb before accessing > initial bytes. This prevents potential out-of-bounds accesses > when processing short packets. > > When ppp_sync_txmung receives an incoming package with an empty > payload: > (remote) gef➤ p *(struct pppoe_hdr *) (skb->head + skb->network_header) > $18 = { > type = 0x1, > ver = 0x1, > code = 0x0, > sid = 0x2, > length = 0x0, > tag = 0xffff8880371cdb96 > } > > [...] Here is the summary with links: - [v2] net: ppp: Add bound checking for skb d on ppp_sync_txmung https://git.kernel.org/netdev/net/c/aabc6596ffb3 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html