{"id":"CVE-2026-72053","revision":"3cf3980a128842f982124c5c1ce76210","records":[{"revision":"3cf3980a128842f982124c5c1ce76210","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72053","aliases":[],"title":"net: ipip: require CAP_NET_ADMIN in the device netns for changelink","description":"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. 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.","state":0,"publishedAt":"2026-08-15T05:52:09.924+00:00","modifiedAt":"2026-10-19T21:19:25.074+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/ipv4/ipip.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6c742e714d8c282fd8f8b22d3e20b5141738c1ee\",\n                            \"lessThan\": \"a7d2642a50282322bc33f34ee7305f2b793df494\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6c742e714d8c282fd8f8b22d3e20b5141738c1ee\",\n                            \"lessThan\": \"068ad9b85f681755f751ebab82ae98146cec163d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6c742e714d8c282fd8f8b22d3e20b5141738c1ee\",\n                            \"lessThan\": \"91571643e554ae89a91942380d5f5361fb7060a2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6c742e714d8c282fd8f8b22d3e20b5141738c1ee\",\n                            \"lessThan\": \"983cc4aa7e6f633b34c3ee743771252d7afa9a90\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6c742e714d8c282fd8f8b22d3e20b5141738c1ee\",\n                            \"lessThan\": \"26544021d5c49cc6ae8a968ccb5033e6363854a4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6c742e714d8c282fd8f8b22d3e20b5141738c1ee\",\n                            \"lessThan\": \"68cadc3698c7de88966d306d12ec9c6217da228a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6c742e714d8c282fd8f8b22d3e20b5141738c1ee\",\n                            \"lessThan\": \"d49edcc65e0a37cc9b386a94415c5d6670ca8b71\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6c742e714d8c282fd8f8b22d3e20b5141738c1ee\",\n                            \"lessThan\": \"8211a26324667980a463c069469a818e71207e02\",\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/ipv4/ipip.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\": \"6.1.178\",\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/a7d2642a50282322bc33f34ee7305f2b793df494","https://git.kernel.org/stable/c/068ad9b85f681755f751ebab82ae98146cec163d","https://git.kernel.org/stable/c/91571643e554ae89a91942380d5f5361fb7060a2","https://git.kernel.org/stable/c/983cc4aa7e6f633b34c3ee743771252d7afa9a90","https://git.kernel.org/stable/c/26544021d5c49cc6ae8a968ccb5033e6363854a4","https://git.kernel.org/stable/c/68cadc3698c7de88966d306d12ec9c6217da228a","https://git.kernel.org/stable/c/d49edcc65e0a37cc9b386a94415c5d6670ca8b71","https://git.kernel.org/stable/c/8211a26324667980a463c069469a818e71207e02"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72053","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72053","identifiers":["CVE-2026-72053"]},"retained":false,"historicalAffected":[]}],"coverage":[]}