{"id":"CVE-2026-72054","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72054","summary":"net: ip_vti: require CAP_NET_ADMIN in the device netns for changelink","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip_vti: require CAP_NET_ADMIN in the device netns for changelink\n\nvti_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 vti_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.","published":"2026-08-15T05:52:10.679Z","modified":"2026-08-18T03:56:19.395922248Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.261"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1caf737e625143c6f23c32d2b747b1a3e42e5699"},{"type":"WEB","url":"https://git.kernel.org/stable/c/32edf8aa297745226854eda2d96c0fac66c1bb15"},{"type":"WEB","url":"https://git.kernel.org/stable/c/33fd93961557ec8e3e9958995b28684c5f949394"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6d8bc0dc99472d62c57c2a3d436e6ab408592bda"},{"type":"WEB","url":"https://git.kernel.org/stable/c/88b33ee458a6ca5fbef6c53b9dba772da69dab68"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9571af2eec8023af9a1671b7f2cd4ab400011724"},{"type":"WEB","url":"https://git.kernel.org/stable/c/95cceadbfd52d7239bd730afdda0655287d77425"},{"type":"WEB","url":"https://git.kernel.org/stable/c/973ead9e565423642e4533e1547b5d2c0476fb03"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72054.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72054"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:19.395922248Z"}}