{"id":"CVE-2026-72053","title":"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->net","summary":"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->net. The…","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","published":"2026-08-15","updated":"2026-08-23","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72053","references":[{"url":"https://git.kernel.org/stable/c/068ad9b85f681755f751ebab82ae98146cec163d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/26544021d5c49cc6ae8a968ccb5033e6363854a4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/68cadc3698c7de88966d306d12ec9c6217da228a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8211a26324667980a463c069469a818e71207e02","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/91571643e554ae89a91942380d5f5361fb7060a2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/983cc4aa7e6f633b34c3ee743771252d7afa9a90","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a7d2642a50282322bc33f34ee7305f2b793df494","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d49edcc65e0a37cc9b386a94415c5d6670ca8b71","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00164,"epssPercentile":0.06056,"ingestedAt":"2026-08-23T13:48:07.888Z","slug":"CVE-2026-72053","body":"## Overview\n\nIn 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->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 ipip_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.\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":[]}