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 8CC4F1E98EF; Sun, 7 Jun 2026 10:43:24 +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=1780829005; cv=none; b=awMuVAwIhfgyFXaBl0+g/dSEq2Fl1mtOgLYd7Jm1s/v8ZPEu3+X84627YJSWb0qirOc5U4z3IHnJDXFtzpbWBCcL6KsFrwPmet84HngymPkLuNlTARV//k3sEb1uaoK8t578qLpCzoi2oICXdfWz88gejh5hQxV2XIHYlHcu24I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780829005; c=relaxed/simple; bh=I6Bdj8AD4V+I79JZ6o6IMig3jQSYDrWCd6vrjAg64PE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DVLitEw3eK4wjmttCU5xf+7xIv6/p5ei/GPXxYjjqawh05V5rU/dBcl+BGF5PvpLIfRONknIbSBP3fZ8k6DXvScPeH7m5f0dB7VKjAj6WTlyFQRSa1+M3Zuw7+H7hI37kBKxdNDicF3BqVkW5lolQGym2S4Awfhj6/h9WEgZnbQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sOQeZY3k; 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="sOQeZY3k" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9DF811F00893; Sun, 7 Jun 2026 10:43:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780829004; bh=+zcdGxaVN+HhNRTQb+8BSXcA5WHGH8Mx0aDcFbExOCo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=sOQeZY3k4B97fcxGF4UjQzi1V5ulgSt/DvF+i/f3dfW6pxviHyFudlaQwb2HFDfA7 fWOe7reFflBYZBQ7lS2ZpQtMlH2he6NWlTlnnlk2u92cys+EA9ifxr1sJhSTtJmR+y KcmxJmz8Y8zCf4W97RrnB0NBkNLbc3/EaaiUTpRo= 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 6.12 186/307] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() Date: Sun, 7 Jun 2026 11:59:43 +0200 Message-ID: <20260607095734.549260978@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260607095727.647295505@linuxfoundation.org> References: <20260607095727.647295505@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 6.12-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))