{"id":"CVE-2026-72054","title":"net: ip_vti: require CAP_NET_ADMIN in the device netns for changelink","summary":"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. Th…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 1caf737e625143c6f23c32d2b747b1a3e42e5699","Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 32edf8aa297745226854eda2d96c0fac66c1bb15","Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 973ead9e565423642e4533e1547b5d2c0476fb03","Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 33fd93961557ec8e3e9958995b28684c5f949394","Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 6d8bc0dc99472d62c57c2a3d436e6ab408592bda","Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 9571af2eec8023af9a1671b7f2cd4ab400011724","Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 88b33ee458a6ca5fbef6c53b9dba772da69dab68","Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 95cceadbfd52d7239bd730afdda0655287d77425","Linux 3.15"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:50:59.364061Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:53:18.394Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72054","references":[{"url":"https://git.kernel.org/stable/c/1caf737e625143c6f23c32d2b747b1a3e42e5699"},{"url":"https://git.kernel.org/stable/c/32edf8aa297745226854eda2d96c0fac66c1bb15"},{"url":"https://git.kernel.org/stable/c/973ead9e565423642e4533e1547b5d2c0476fb03"},{"url":"https://git.kernel.org/stable/c/33fd93961557ec8e3e9958995b28684c5f949394"},{"url":"https://git.kernel.org/stable/c/6d8bc0dc99472d62c57c2a3d436e6ab408592bda"},{"url":"https://git.kernel.org/stable/c/9571af2eec8023af9a1671b7f2cd4ab400011724"},{"url":"https://git.kernel.org/stable/c/88b33ee458a6ca5fbef6c53b9dba772da69dab68"},{"url":"https://git.kernel.org/stable/c/95cceadbfd52d7239bd730afdda0655287d77425"}],"tags":["cve.org"],"epss":0.00169,"epssPercentile":0.05783,"ingestedAt":"2026-10-16T17:24:46.873Z","slug":"CVE-2026-72054","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 1caf737e625143c6f23c32d2b747b1a3e42e5699`\n- `Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 32edf8aa297745226854eda2d96c0fac66c1bb15`\n- `Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 973ead9e565423642e4533e1547b5d2c0476fb03`\n- `Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 33fd93961557ec8e3e9958995b28684c5f949394`\n- `Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 6d8bc0dc99472d62c57c2a3d436e6ab408592bda`\n- `Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 9571af2eec8023af9a1671b7f2cd4ab400011724`\n- `Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 88b33ee458a6ca5fbef6c53b9dba772da69dab68`\n- `Linux >= 895de9a3488abcdd186680f0af3cce7f2d4d4a6e < 95cceadbfd52d7239bd730afdda0655287d77425`\n- `Linux 3.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}