{"id":"CVE-2026-72051","revision":"7d2082cb07be455c850ac2d2177140a3","records":[{"revision":"7d2082cb07be455c850ac2d2177140a3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72051","aliases":[],"title":"net: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip6_tunnel: require CAP_NET_ADMIN in the device netns for changelink\n\nip6_tnl_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 ip6_tnl_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.","state":0,"publishedAt":"2026-08-15T05:52:08.445+00:00","modifiedAt":"2026-10-19T21:19:24.769+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_tunnel.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0bd8762824e73a3cce7b7560a97463301764b616\",\n                            \"lessThan\": \"2d53ee7daabe733deb81f51d2cc90188f8ad59a1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0bd8762824e73a3cce7b7560a97463301764b616\",\n                            \"lessThan\": \"82e53e7281c71e174f9f5877c566a623c637b406\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0bd8762824e73a3cce7b7560a97463301764b616\",\n                            \"lessThan\": \"5252db8fb604321133138c7069d6fc3fcd89cdee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0bd8762824e73a3cce7b7560a97463301764b616\",\n                            \"lessThan\": \"2636d061bc237a2446a146e42dcc6563acfa7432\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0bd8762824e73a3cce7b7560a97463301764b616\",\n                            \"lessThan\": \"7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0bd8762824e73a3cce7b7560a97463301764b616\",\n                            \"lessThan\": \"234cd54fc500f69db43e37de38603da617fbbeea\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0bd8762824e73a3cce7b7560a97463301764b616\",\n                            \"lessThan\": \"d4bcc202a3530c856e1cb183384bc9cc8fddab22\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0bd8762824e73a3cce7b7560a97463301764b616\",\n                            \"lessThan\": \"2496fa0b7d180b3ad356b514e7ff93bb14e6140a\",\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_tunnel.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.266\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.217\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.184\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\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/2d53ee7daabe733deb81f51d2cc90188f8ad59a1","https://git.kernel.org/stable/c/82e53e7281c71e174f9f5877c566a623c637b406","https://git.kernel.org/stable/c/5252db8fb604321133138c7069d6fc3fcd89cdee","https://git.kernel.org/stable/c/2636d061bc237a2446a146e42dcc6563acfa7432","https://git.kernel.org/stable/c/7f68f7928484f463a5bc0d50e6fdd8d16f55a5aa","https://git.kernel.org/stable/c/234cd54fc500f69db43e37de38603da617fbbeea","https://git.kernel.org/stable/c/d4bcc202a3530c856e1cb183384bc9cc8fddab22","https://git.kernel.org/stable/c/2496fa0b7d180b3ad356b514e7ff93bb14e6140a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72051","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72051","identifiers":["CVE-2026-72051"]},"retained":false,"historicalAffected":[]}],"coverage":[]}