CVE-2026-72051
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink
ip6_tnl_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 t->net can rewrite a tunnel that
lives in t->net.
Gate ip6_tnl_changelink() on rtnl_dev_link_net_capable() at its top,
before any attribute is parsed.
https://git.kernel.org/stable/c/234cd54fc500f69db43e37de38603da617fbbeea
https://git.kernel.org/stable/c/2496fa0b7d180b3ad356b514e7ff93bb14e6140a
https://git.kernel.org/stable/c/2636d061bc237a2446a146e42dcc6563acfa7432
https://git.kernel.org/stable/c/7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa
https://git.kernel.org/stable/c/d4bcc202a3530c856e1cb183384bc9cc8fddab22