From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E3BE14078FB for ; Tue, 1 Sep 2026 03:11:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788232276; cv=none; b=BhUkzRLUQmln2rlW3ywzG3JR0c0vGjAEn+tDdRjWYBIup5a4+f239si5HUJYfT8awkcD5sV8Ocn1P+YN/EjkUbiU/X38S2CgLUWZuFvK0u8HfZrvRtDabqxsWaT3Q3VVn6xzqn6gAXkzurdROxlq5ZYOPwYh3SN4gPDJO129bF0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788232276; c=relaxed/simple; bh=HRYfZc1Wvv1MsQkU/siN5dPv9ctvyBZAeu6dOJNgELk=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=jWVx1qvJN+5DCyZ39cf9VamcfGY0a5cL0XzivU6ZKqO8CSm0V+uKBlQL5dk9iRjPVH7GwjwgcjZZm/7o9PoXUu9jM+helvQq5udP6lfTbeh4nL8nZ2dydqAyQBXGoWVMvgMBHFm62zi7QxdiRf7Tf/A9fqHF1MpbijUL5Xe6eIw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=e2VR9Pac; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="e2VR9Pac" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 991251F00A3E; Tue, 1 Sep 2026 03:11:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788232274; bh=EJLFJHq7MSmDiqFkw+aCBJE9sT6wofwCY4yZB7gvUxo=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=e2VR9PacfQ8R13hgyColq5DXByINjt/1cYEiFNfBMRl3zo10UTxFGMErDWB4JpOp4 r2dfqKuS5tFEHmC8Ev6HkkAWWNEEfxI5zuFLBxH7Y3Tn7zpcSoMbUHpN/WP8S+mHYF H14a071kfZEzwltgIsNTwTr4e7D8sFDiNhZ+xjdb5+y4cuVuwmj34lCx78nVzmoaLO cDaW1w6voiUVEKdYKe80S21ATijsNbP8q1rRFaAoq+APIRLzm7B0kMk4ivwHgo2P5R rZhT+VRfHn90bMKX3N7iKC6bq7pBuJgC35uOoTLUKmAIm6mXJl84SobHiDizhjY6ll 3bxzI0yV+LvJQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id A69463924A51; Tue, 1 Sep 2026 03:10:18 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v2 0/4] Mitigate a side channel in routing exception caches From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178823221738.912076.12244805765246266662.git-patchwork-notify@kernel.org> Date: Tue, 01 Sep 2026 03:10:17 +0000 References: <20260828192344.2596928-1-idosch@nvidia.com> In-Reply-To: <20260828192344.2596928-1-idosch@nvidia.com> To: Ido Schimmel Cc: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, dsahern@kernel.org, horms@kernel.org, willemdebruijn.kernel@gmail.com, aksecurity@gmail.com, noam.caspi@mail.huji.ac.il Hello: This series was applied to netdev/net.git (main) by Jakub Kicinski : On Fri, 28 Aug 2026 22:23:40 +0300 you wrote: > When an ICMP error that quotes a UDP packet is locally delivered, the > kernel only creates a routing exception if the quoted packet matches a > socket. This allows an off-path attacker to conduct a side-channel > attack on the routing exception caches in order to discover the > ephemeral ports used by connected UDP sockets. > > Previous mitigations tried to make it harder for attackers to find hash > collisions in these caches and make the eviction of exceptions less > predictable. Amit Klein and Noam Caspi demonstrated that both of these > mitigations can be bypassed. > > [...] Here is the summary with links: - [net,v2,1/4] ipv6: Fix redirect exception creation for UDP/RAW sockets https://git.kernel.org/netdev/net/c/cd51b74bdd0b - [net,v2,2/4] ipv4: udp: Create exceptions before socket matching https://git.kernel.org/netdev/net/c/4c3499f79f8c - [net,v2,3/4] ipv6: udp: Create exceptions before socket matching https://git.kernel.org/netdev/net/c/ac76cab50e89 - [net,v2,4/4] selftests: net: Add exception cache tests https://git.kernel.org/netdev/net/c/c923c14942b1 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html