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 8279B3E9F7C; Thu, 19 Mar 2026 16:40:17 +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=1773938417; cv=none; b=l7Ute2w4aY1A6GWmNaDvtBUwcGWpm5WoyfV3O+jab4EIeKsXdM0mp74CU3CyxAAmFUYt46784mpadWHW1MmVCC6L5U+44vo6s1kx9/6ssEklKszUNaGyLJ43APg7UnwZ3LQjzi+Z3HbIkNHhj5E4H8pq68cbNGJ8+egAE+GAzdg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773938417; c=relaxed/simple; bh=MV5BNbwXvaI0ASYw7Q+3gYMQsNYfca7q3AJDNfPoJwk=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=A4b+eAQQQMGZ0+aItcTRd6F6MGJ77wmCW8K1Kn1diCAsttwVBWgv2e2O/TSTJDhPgmZzbiiJ7Xe9u3c7buj2lC+uEuc3dQOka+rjphmQiKrQjvoCIH/EQMugXW/+b0bwQNzI+/AsgIUnmtkSIOdeYa+v7TP+0nvLID/rziuqh9A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FoeUcZsp; 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="FoeUcZsp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1C399C19424; Thu, 19 Mar 2026 16:40:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773938417; bh=MV5BNbwXvaI0ASYw7Q+3gYMQsNYfca7q3AJDNfPoJwk=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=FoeUcZspymLy3BPQxW5zhI2wPipAdF5nVTRm6kpvVxXUWCQPX5IQZHTHWvR/PqHR6 1wSw8jGCwXqxcIACAoUBN68ONf8SnSFinJWt/1hKu0/uHPXOaNB8q4FG3xv+/730oi 1w48mjmBSK5USZvdeznaGWbeM59Dij6XJoUckmfem9wBtSWrdTMA3bQ5Fp0+FHHGh5 c0DmYMR3mxdkubi9cesvy5F35V7Dn2nFnK6adFsUuRdb3WeepZc1U/aJAmrcQwelP6 iCsoVYB7gyeUnRpIxw1Sb21MgnhIZX+/p/IajaUppTQvq9d6JIF4WLZKmI0sL2UnvB kwFGtg2cLzgIA== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3FE85380692A; Thu, 19 Mar 2026 16:40:09 +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] icmp: fix NULL pointer dereference in icmp_tag_validation() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177393840804.1701817.18293524741667806586.git-patchwork-notify@kernel.org> Date: Thu, 19 Mar 2026 16:40:08 +0000 References: <20260318130558.1050247-4-bestswngs@gmail.com> In-Reply-To: <20260318130558.1050247-4-bestswngs@gmail.com> To: Weiming Shi Cc: security@kernel.org, edumazet@google.com, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, xmei5@asu.edu Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Wed, 18 Mar 2026 21:06:01 +0800 you wrote: > From: Weiming Shi > > icmp_tag_validation() unconditionally dereferences the result of > rcu_dereference(inet_protos[proto]) without checking for NULL. > The inet_protos[] array is sparse -- only about 15 of 256 protocol > numbers have registered handlers. When ip_no_pmtu_disc is set to 3 > (hardened PMTU mode) and the kernel receives an ICMP Fragmentation > Needed error with a quoted inner IP header containing an unregistered > protocol number, the NULL dereference causes a kernel panic in > softirq context. > > [...] Here is the summary with links: - [net] icmp: fix NULL pointer dereference in icmp_tag_validation() https://git.kernel.org/netdev/net/c/614aefe56af8 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html