From: Justin Iurman Date: Fri, 22 May 2026 11:20:13 +0000 (+0200) Subject: ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() X-Git-Tag: v7.1-rc6~27^2~24 X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=d47548a36639095939f4747d4c43f2271366f565;p=thirdparty%2Fkernel%2Flinux.git ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() 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 --- diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c index 6d92c02d0e3d..aca2a2abd2df 100644 --- 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))