Thread (9 messages) 9 messages, 2 authors, 9d ago

Re: [PATCH net v6 0/7] net: require CAP_NET_ADMIN in the device netns for tunnel changelink

From: patchwork-bot+netdevbpf@kernel.org
Date: 2026-06-18 00:20:52
Also in: lkml, stable

Hello:

This series was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Fri, 12 Jun 2026 16:59:34 +0800 you wrote:
A tunnel changelink() operates on at most two netns, dev_net(dev) and
the tunnel link netns t->net. They differ once the device is created in
or moved to a netns other than the one the request runs in. The rtnl
changelink path checks CAP_NET_ADMIN only against dev_net(dev), so a
caller privileged there but not in the link netns can rewrite a tunnel
that lives in the link netns. Commit 8b484efd5cb4 ("ip6: vti: Use
ip6_tnl.net in vti6_siocdevprivate().") added the same check on the
ioctl path. This series adds it on the RTM_NEWLINK path.

[...]
Here is the summary with links:
  - [net,v6,1/7] net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink
    https://git.kernel.org/netdev/net/c/8165f7ff57d9
  - [net,v6,2/7] net: ipip: require CAP_NET_ADMIN in the device netns for changelink
    https://git.kernel.org/netdev/net/c/8211a2632466
  - [net,v6,3/7] net: ip_vti: require CAP_NET_ADMIN in the device netns for changelink
    https://git.kernel.org/netdev/net/c/95cceadbfd52
  - [net,v6,4/7] net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink
    https://git.kernel.org/netdev/net/c/2496fa0b7d18
  - [net,v6,5/7] net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink
    https://git.kernel.org/netdev/net/c/f00a50876d28
  - [net,v6,6/7] net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink
    https://git.kernel.org/netdev/net/c/e2ac3b242c37
  - [net,v6,7/7] xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink
    https://git.kernel.org/netdev/net/c/095515d89b19

You are awesome, thank you!
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