UNKNOWN NVD
CVE-2026-72052
In the Linux kernel, the following vulnerability has been resolved: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink ip6gre_changelink()
In the Linux kernel, the following vulnerability has been resolved:
net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink
ip6gre_changelink() and ip6erspan_changelink() operate 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 t->net can
rewrite a tunnel that lives in t->net.
Gate both ops on rtnl_dev_link_net_capable() at their top, before any
attribute is parsed.
References
- https://git.kernel.org/stable/c/03d8843b143ebbbfaf48511922abc6e886575a61
- https://git.kernel.org/stable/c/0caa9f348f8b5356900de77b0bb89a697c4aff20
- https://git.kernel.org/stable/c/129f8939e5af683cec3a1a5edcb40a64636ad81e
- https://git.kernel.org/stable/c/1d4d8ee002083ca4ead5353662bf8362428af57f
- https://git.kernel.org/stable/c/220162c9fedbe992da70d70f50a10da4f45f914c
This unknown severity vulnerability was published on 2026-08-15 via NVD.
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