{"id":"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-\u003enet. 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-\u003enet can rewrite an interface that\nlives in xi-\u003enet.\n\nGate xfrmi_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.","modified":"2026-08-18T03:56:54.989448551Z","published":"2026-08-15T05:53:11.072Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72136.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f203b76d78092faf248db3f851840fbecf80b40e"},{"fixed":"04c1aa57d08471b1953bf27c84ac9b3d78d71831"},{"fixed":"bdfd1c21d90e628a58a9de79e024cdfcbedfa15c"},{"fixed":"80ec68bba11f7f387c0e4099c2d7b2c84943eb99"},{"fixed":"e9c90756f10da334fb31552e52c61f1dba69f491"},{"fixed":"37b61946d278c7deb0d40ba8f2b6fc0478d61dab"},{"fixed":"8ca2a19a987a7d1cb4c916ed9723a1c6993b4276"},{"fixed":"3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea"},{"fixed":"095515d89b19b6cc19dfcdc846f97403ed1ebce3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72136.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.19.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72136.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}