CVE-2026-31692 | BDVDB-2026-329784 Detail

Description#

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: add missing netlink_ns_capable() check for peer netns rtnl_newlink() lacks a CAP_NET_ADMIN capability check on the peer network namespace when creating paired devices (veth, vxcan, netkit). This allows an unprivileged user with a user namespace to create interfaces in arbitrary network namespaces, including init_net. Add a netlink_ns_capable() check for CAP_NET_ADMIN in the peer namespace before allowing device creation to proceed.

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Exploit#

History#

1. Version 12026-04-30Record published in the CVE List.
2. Version 22026-11-06Most recent update recorded in the CVE List.