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 C367447A0D4; Tue, 16 Jun 2026 17:28:37 +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=1781630920; cv=none; b=ungTtlXNnRS5GCr8G2OTdHl4zAIX7XUtk2pKnfXxRBgzpuq4s6WVESDTZE0OSoyOzfNofq9PREgGygebnxr4V74TfSZutHpgxqUU+48fujpQp3yQGvrChDew8/wuYaC3kBJus7lmVlRhn0QutDj6xc8FRO2hwGyqTB1t2wgh8b4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781630920; c=relaxed/simple; bh=r6fRQyekDmpTXpE3Fsdmg1nOjSr9xLSam1gVD/beFqM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nZqfT/BXRrM7odPvOoK1telRVgS2pIIYzWi3KHdQIhLgEIsiv8JUSn1uzXfhiG1DH32BGpmdssjV8BhMNEXO1AY5pr6BTH5pOtv/95Vp+ye6ePHPUXHkCkLUapcOOzfG30+mXeBuj3euY4ykFPW0dxMPZB/IIsDRovmf4mzxAxo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=iWK0YXS7; 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="iWK0YXS7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 563511F000E9; Tue, 16 Jun 2026 17:28:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1781630917; bh=ZZiYPaNt0Q/+9l2JjJUhX0R2zJ6tnHugcKwQYU0UPtE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=iWK0YXS7LVNjE0VLcx6gT8J+zjJ9J+m3UDpM9GFIs3aHHsw2jz3afxK3n7lUyaYcX dDEeZ/TrBPVHODprrJVpeRbrsLimHy8ZR7Hf4XjFOtEbDptjMwvAwAYuanBe0gH9BX C9t0L/f5VLXeAtgVm3/QT2QNRRoCJosyiO0Al6bc= 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 6.1 121/522] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() Date: Tue, 16 Jun 2026 20:24:28 +0530 Message-ID: <20260616145131.643065024@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260616145125.307082728@linuxfoundation.org> References: <20260616145125.307082728@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 6.1-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 @@ -186,6 +186,8 @@ 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))