{"id":"CVE-2026-72053","summary":"net: ipip: require CAP_NET_ADMIN in the device netns for changelink","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ipip: require CAP_NET_ADMIN in the device netns for changelink\n\nipip_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 ipip_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.","modified":"2026-08-25T03:51:40.218052308Z","published":"2026-08-15T05:52:09.924Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72053.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/068ad9b85f681755f751ebab82ae98146cec163d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/26544021d5c49cc6ae8a968ccb5033e6363854a4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/68cadc3698c7de88966d306d12ec9c6217da228a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8211a26324667980a463c069469a818e71207e02"},{"type":"WEB","url":"https://git.kernel.org/stable/c/91571643e554ae89a91942380d5f5361fb7060a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/983cc4aa7e6f633b34c3ee743771252d7afa9a90"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a7d2642a50282322bc33f34ee7305f2b793df494"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d49edcc65e0a37cc9b386a94415c5d6670ca8b71"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72053.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72053"},{"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":"6c742e714d8c282fd8f8b22d3e20b5141738c1ee"},{"fixed":"a7d2642a50282322bc33f34ee7305f2b793df494"},{"fixed":"068ad9b85f681755f751ebab82ae98146cec163d"},{"fixed":"91571643e554ae89a91942380d5f5361fb7060a2"},{"fixed":"983cc4aa7e6f633b34c3ee743771252d7afa9a90"},{"fixed":"26544021d5c49cc6ae8a968ccb5033e6363854a4"},{"fixed":"68cadc3698c7de88966d306d12ec9c6217da228a"},{"fixed":"d49edcc65e0a37cc9b386a94415c5d6670ca8b71"},{"fixed":"8211a26324667980a463c069469a818e71207e02"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72053.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.12.0"},{"fixed":"5.10.266"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.217"}]},{"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-2026-72053.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"}]}