{"id":"CVE-2026-72051","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72051","summary":"net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink\n\nip6_tnl_changelink() operates on at most two netns, dev_net(dev) and the\ntunnel link netns t->net. They differ once the device is created in or\nmoved to a netns other than the one the request runs in. The rtnl\nchangelink path checks CAP_NET_ADMIN only against dev_net(dev), so a\ncaller privileged there but not in t->net can rewrite a tunnel that\nlives in t->net.\n\nGate ip6_tnl_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.","published":"2026-08-15T05:52:08.445Z","modified":"2026-08-16T03:48:31.566101813Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.6.148"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/234cd54fc500f69db43e37de38603da617fbbeea"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2496fa0b7d180b3ad356b514e7ff93bb14e6140a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2636d061bc237a2446a146e42dcc6563acfa7432"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d4bcc202a3530c856e1cb183384bc9cc8fddab22"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72051.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72051"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-16T03:48:31.566101813Z"}}