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 575F22D3A69; Sun, 7 Jun 2026 10:39:04 +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=1780828745; cv=none; b=O72GDBujfApoekBREw7uz7InjjAh9ghdt/VZdsh1EyTvq2LRkdpKdQ72RM763oOeZAjeaU+lGyeryFOn3BfKu2KnyY9i63OEo3OPzYt5jAvjf0A2soY3XcvPLuEvhbPP/Vnr20G1M4tOwTpFuS5LK9TIdvgI1I4zeY8t+++mQmg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780828745; c=relaxed/simple; bh=UuVD0KPtTt9FaBu3BEbfFGUGxPWF77fQzM421rRqhZ8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=URTCFlOEAGL+GVscamO8wo5lVafaDIRnGwtDKP3GqSFm1EQYRyHcTG4A5x1chnzB246OxMEkbdiGgKFJ4+XDUeBcPlscFpNhmaXSKAW1g5t16ZNMoAlk70wGfJQcfcg7wlAcFQ7RzuR/DnDvwciOo/05nOV0x89+k1zhpB2J20c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zZwiul12; 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="zZwiul12" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 93E971F00893; Sun, 7 Jun 2026 10:39:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780828744; bh=WnLbhKwmveuBsCA0LqjtmrB24aIdAlFZWhq7tLzaLDI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=zZwiul12ezjtNIbSQDvY+zl5k5H8kh3iReJXFt/lq9QR3Wabfx778HOlbsEePjW/s O7QnDgBtVgGoZ4KKMp8ycbo1/KEzK74X28r52GMkfeznxg/j1JioAmZWNusJX97Dsb ehnX/dbjg30+pfrP5l/dY4qbq7/v8UxIFKiFuOdE= 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 6.18 187/315] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() Date: Sun, 7 Jun 2026 11:59:34 +0200 Message-ID: <20260607095734.448782006@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260607095727.528828913@linuxfoundation.org> References: <20260607095727.528828913@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 6.18-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 @@ -184,6 +184,8 @@ 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))