{"id":"CVE-2026-72055","revision":"c390bf6c681347eea681d78588742bf6","records":[{"revision":"c390bf6c681347eea681d78588742bf6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72055","aliases":[],"title":"net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink\n\nvti6_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 vti6_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.","state":0,"publishedAt":"2026-08-15T05:52:11.413+00:00","modifiedAt":"2026-10-19T21:19:25.382+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/ipv6/ip6_vti.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"61220ab349485d911083d0b7990ccd3db6c63297\",\n                            \"lessThan\": \"f5254e7766b4ac02b66b2ccef896cd278503cb11\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"61220ab349485d911083d0b7990ccd3db6c63297\",\n                            \"lessThan\": \"ef897249dc957089e6f7f11ceea699e093ad51bd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"61220ab349485d911083d0b7990ccd3db6c63297\",\n                            \"lessThan\": \"f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"61220ab349485d911083d0b7990ccd3db6c63297\",\n                            \"lessThan\": \"c64b9ae7eb97e81d54b792910a3aeafd92566c79\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"61220ab349485d911083d0b7990ccd3db6c63297\",\n                            \"lessThan\": \"b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"61220ab349485d911083d0b7990ccd3db6c63297\",\n                            \"lessThan\": \"0b2f9c908f930ec4be17d389723f9a202d6a883c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"61220ab349485d911083d0b7990ccd3db6c63297\",\n                            \"lessThan\": \"f97e93ebf2f9b8ef3b87f7a9371255e84d151587\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"61220ab349485d911083d0b7990ccd3db6c63297\",\n                            \"lessThan\": \"e2ac3b242c37dff323a964962e43854f4b1a2b79\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/ipv6/ip6_vti.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.261\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.212\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/f5254e7766b4ac02b66b2ccef896cd278503cb11","https://git.kernel.org/stable/c/ef897249dc957089e6f7f11ceea699e093ad51bd","https://git.kernel.org/stable/c/f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba","https://git.kernel.org/stable/c/c64b9ae7eb97e81d54b792910a3aeafd92566c79","https://git.kernel.org/stable/c/b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf","https://git.kernel.org/stable/c/0b2f9c908f930ec4be17d389723f9a202d6a883c","https://git.kernel.org/stable/c/f97e93ebf2f9b8ef3b87f7a9371255e84d151587","https://git.kernel.org/stable/c/e2ac3b242c37dff323a964962e43854f4b1a2b79"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72055","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72055","identifiers":["CVE-2026-72055"]},"retained":false,"historicalAffected":[]}],"coverage":[]}