From nobody Sun Mar 22 10:10:32 2026 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 6660F35AC0F for ; Tue, 17 Mar 2026 09:13:39 +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=1773738819; cv=none; b=GAPcj36Ygfgt3tlnAtpHCxWXxucArxSWLX/8HGNE6Ktvj8HawDvLDut1swcbUyNT1bPjBrwWLuhEf+hKybw/5gU8zYJLFPR+tYYmlZYWTiBnRfq2T05FY6Zlel9TzLoqSS29Skfp6j1og3wzi6EkJhcIQBVeLOyEgsGI9bDGbjI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773738819; c=relaxed/simple; bh=IpOEgkWeR/fGuGvjz34os5dYQma6F4rBZsAwJ7DQ8No=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UuZfJKXGBksotrU1Wa6/E4vROOO1YfVbumA5ZK+6cUquBkJDN3dKcDl5+ejBosTZoV0Z0bU0Qzdr4SDl7GtKiUUKufX9Ji6o2pUXu7yT4wba7QCMaGIOdSG2u4xeHJi1Mjs28di1NKf+FNEsGo8ASi0MgHMucb8cadG0DTUvbvU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=By1k3TgF; 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="By1k3TgF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3137DC19425; Tue, 17 Mar 2026 09:13:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773738819; bh=IpOEgkWeR/fGuGvjz34os5dYQma6F4rBZsAwJ7DQ8No=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=By1k3TgFAZ0sts23EGD9OVSWv0DNBwObhEOB1e0AAOvcZZikfTrNfJaDmad/uu8B0 DVzKIMWczEwvjU9+5X+CgjRQq5IJr20Dkm1P1mPsNMkS6JWdVb27uweKcvgSHPY4Nv vdoFLdSzl37ADPCqJ+BxC2LQ8JukHbNJoBADY9s39o1CYAO6xxbkaFkhbndtYbMwMa wX+BcZPeSH5H79XIwTP+nKlQRLtPiUusUsWXfSwQ5F9SEank7QTaYrKxlCRtCtx6UH JbzqQyqXK1Sw/ZwQqd2Rmpq42c2UxAmvvdHQCDmhc++XA44gDMtDZzNMdbaD9Tr8EV d0S0l2keNQvKg== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Gang Yan , Geliang Tang Subject: [RFC mptcp-next v10 03/14] tls: add MPTCP SKB offset check in strp queue walk Date: Tue, 17 Mar 2026 17:12:39 +0800 Message-ID: X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Gang Yan In MPTCP, subflow SKBs can have non-zero offsets due to out-of-order handling or partial delivery. When walking the TLS strp queue for sequence and decryption checks, validate each SKB's offset except the first using get_skb_off() to ensure queue consistency. This is specific to MPTCP, as TCP does not require offset checks. If any invalid offset is found, return false to trigger resynchronization. Co-developed-by: Geliang Tang Signed-off-by: Geliang Tang Signed-off-by: Gang Yan --- net/tls/tls_strp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/tls/tls_strp.c b/net/tls/tls_strp.c index ef1a8659ee18..b6798d09c922 100644 --- a/net/tls/tls_strp.c +++ b/net/tls/tls_strp.c @@ -454,6 +454,9 @@ static bool tls_strp_check_queue_ok(struct tls_strparse= r *strp) len -=3D skb->len; skb =3D skb->next; =20 + if (ctx->ops->get_skb_off && + ctx->ops->get_skb_off(skb)) + return false; if (ctx->ops->get_skb_seq(skb) !=3D seq) return false; if (skb_cmp_decrypted(first, skb)) --=20 2.53.0