{"id":"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-\u003enet. 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-\u003enet can rewrite a tunnel that\nlives in t-\u003enet.\n\nGate vti_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.","modified":"2026-08-18T03:56:19.395922248Z","published":"2026-08-15T05:52:10.679Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72054.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"895de9a3488abcdd186680f0af3cce7f2d4d4a6e"},{"fixed":"1caf737e625143c6f23c32d2b747b1a3e42e5699"},{"fixed":"32edf8aa297745226854eda2d96c0fac66c1bb15"},{"fixed":"973ead9e565423642e4533e1547b5d2c0476fb03"},{"fixed":"33fd93961557ec8e3e9958995b28684c5f949394"},{"fixed":"6d8bc0dc99472d62c57c2a3d436e6ab408592bda"},{"fixed":"9571af2eec8023af9a1671b7f2cd4ab400011724"},{"fixed":"88b33ee458a6ca5fbef6c53b9dba772da69dab68"},{"fixed":"95cceadbfd52d7239bd730afdda0655287d77425"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72054.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.15.0"},{"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-2026-72054.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"}]}