{"id":"CVE-2026-72136","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72136","summary":"xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink\n\nxfrmi_changelink() operates on at most two netns, dev_net(dev) and the\ninterface link netns xi->net. They differ once the device is created in\nor moved 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 xi->net can rewrite an interface that\nlives in xi->net.\n\nGate xfrmi_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.","published":"2026-08-15T05:53:11.072Z","modified":"2026-08-18T03:56:54.989448551Z","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/04c1aa57d08471b1953bf27c84ac9b3d78d71831"},{"type":"WEB","url":"https://git.kernel.org/stable/c/095515d89b19b6cc19dfcdc846f97403ed1ebce3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/37b61946d278c7deb0d40ba8f2b6fc0478d61dab"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea"},{"type":"WEB","url":"https://git.kernel.org/stable/c/80ec68bba11f7f387c0e4099c2d7b2c84943eb99"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8ca2a19a987a7d1cb4c916ed9723a1c6993b4276"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bdfd1c21d90e628a58a9de79e024cdfcbedfa15c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e9c90756f10da334fb31552e52c61f1dba69f491"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72136.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72136"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:54.989448551Z"}}