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 0EDF03D47CE; Tue, 16 Jun 2026 18:11:55 +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=1781633516; cv=none; b=a9gaMiLdTWCUJMhm13fHNA+sQ/u5wIqUWDADNzzHqCR6fE1+Qc7ARx2nliHSYi9bZhuYt+ZzRfAP+37rj4/onOuiQ4VIN8ndN02byWO8RdyDOVtoqBEOocGNRkakFQM8Yu2j6UviHkTrMFJkqFnzoj56EXtHsHkO+a6wFimEeL8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781633516; c=relaxed/simple; bh=cx/NPcODYvZ1nyuIfmICcQZihUWtlsydLITL6/Afl4k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lKDaJMj3GTb8NufBtPAcPPHJwJW8bQv0PPTDEy5zhMxurnVZnkreCDeKaXpMdTyEu0gwVRPKbm1m2A4us0wa2inX05OamhXCY4eQD5l8ina9jZrq5uHZfBDX+BDETBu7gBfRMbndQL9a1CQgwHAL+p1a61wCsOWLuOclkrBWz7M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OJYtTKJH; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="OJYtTKJH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 146CA1F000E9; Tue, 16 Jun 2026 18:11:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1781633515; bh=BI1d5jk2wz6N0eO3LN1LrUHrKiae0kE0k7ykLP+xz4A=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OJYtTKJHKXJgUqtYlssBCkVyDm2++54uvtJnKICnyKwY7cFU5istiX9vsRqYHmtad Z65v+SLD0dHxRcTcygyiGRrCus3WCazcVTt4WWv3jK4wVX9Crwan66RhiP9ClpeY7N Pzv0ePe3HU8U7qYGSNymMsmqT/N8rbOeS2KPmpaY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Justin Iurman , Ido Schimmel , Jakub Kicinski Subject: [PATCH 5.15 086/411] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() Date: Tue, 16 Jun 2026 20:25:24 +0530 Message-ID: <20260616145104.824758790@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260616145100.376842714@linuxfoundation.org> References: <20260616145100.376842714@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Justin Iurman commit d47548a36639095939f4747d4c43f2271366f565 upstream. ipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers. Let's recompute nh pointer to make sure any change won't mess things up. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Signed-off-by: Justin Iurman Reviewed-by: Ido Schimmel Link: https://patch.msgid.link/20260522112013.12342-1-justin.iurman@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/ipv6/exthdrs.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/ipv6/exthdrs.c +++ b/net/ipv6/exthdrs.c @@ -183,6 +183,8 @@ static bool ip6_parse_tlv(bool hopbyhop, case IPV6_TLV_JUMBO: if (!ipv6_hop_jumbo(skb, off)) return false; + + nh = skb_network_header(skb); break; case IPV6_TLV_CALIPSO: if (!ipv6_hop_calipso(skb, off))