* [PATCH net] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
@ 2026-05-22 11:20 Justin Iurman
2026-05-24 14:27 ` Ido Schimmel
2026-05-25 18:20 ` patchwork-bot+netdevbpf
0 siblings, 2 replies; 3+ messages in thread
From: Justin Iurman @ 2026-05-22 11:20 UTC (permalink / raw)
To: netdev
Cc: davem, dsahern, edumazet, kuba, pabeni, horms, idosch,
justin.iurman, stable
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 <justin.iurman@gmail.com>
---
net/ipv6/exthdrs.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index cf90f933ca1a..11915b75ece0 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))
--
2.34.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH net] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
2026-05-22 11:20 [PATCH net] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() Justin Iurman
@ 2026-05-24 14:27 ` Ido Schimmel
2026-05-25 18:20 ` patchwork-bot+netdevbpf
1 sibling, 0 replies; 3+ messages in thread
From: Ido Schimmel @ 2026-05-24 14:27 UTC (permalink / raw)
To: Justin Iurman
Cc: netdev, davem, dsahern, edumazet, kuba, pabeni, horms, stable
On Fri, May 22, 2026 at 01:20:13PM +0200, Justin Iurman wrote:
> 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 <justin.iurman@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH net] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
2026-05-22 11:20 [PATCH net] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() Justin Iurman
2026-05-24 14:27 ` Ido Schimmel
@ 2026-05-25 18:20 ` patchwork-bot+netdevbpf
1 sibling, 0 replies; 3+ messages in thread
From: patchwork-bot+netdevbpf @ 2026-05-25 18:20 UTC (permalink / raw)
To: Justin Iurman
Cc: netdev, davem, dsahern, edumazet, kuba, pabeni, horms, idosch,
stable
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Fri, 22 May 2026 13:20:13 +0200 you wrote:
> 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 <justin.iurman@gmail.com>
>
> [...]
Here is the summary with links:
- [net] ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()
https://git.kernel.org/netdev/net/c/d47548a36639
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-05-25 18:20 ` patchwork-bot+netdevbpf
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