CVE-2024-26857 geneve: make sure to pull inner header in geneve_rx()

In the Linux kernel, the following vulnerability has been resolved: geneve: make sure to pull inner header in geneverx syzbot triggered a bug in geneverx 1 Issue is similar to the one I fixed in commit 8d975c15c0cd "ip6tunnel: make sure to pull inner header in ip6tnlrcv" We have to save...

CVE-2024-26857

CVE-2024-26857 affects the Linux kernel, specifically the Geneve tunnel path. The issue stems from not safely handling skb/header state during inner header pull in geneve_rx(), risking uninitialized usage of headers after pskb_inet_may_pull(). The root cause is tied to how skb->network_header ...