CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's ip6_tunnel functionality, specifically allowing a user with CAP_NET_ADMIN privileges in one network namespace to manipulate tunnel links in another namespace without proper authorization. This could lead to unauthorized changes in network configurations, potentially compromising network security and stability. System administrators and organizations utilizing Linux systems with network namespaces should prioritize addressing this vulnerability to prevent potential exploitation.
Original NVD Description
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.