[Devel] [PATCH vz10 1/7] ms/vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()

[Vladimir Riabchun]

On Tue, 01 Sep 2026 01:48:19 +0300, Eva Kurchatova <eva.kurchatova at virtuozzo.com> wrote:
> skb_tunnel_check_pmtu() can change skb->head.
> 
> Reusing old_iph afer skb_tunnel_check_pmtu() can cause an UAF.
> 
> Use instead ip_hdr(skb) as done in drivers/net/bareudp.c
> and drivers/net/geneve.c.
> 
> [...]

Reviewed-by: Vladimir Riabchun <vladimir.riabchun at virtuozzo.com>

-- 
Vladimir Riabchun <vladimir.riabchun at virtuozzo.com>