{"id":"CVE-2026-72061","revision":null,"records":[{"revision":"9933953ae5d5439ebe0edba4ab8f2576","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72061","aliases":[],"title":"net: sit: require CAP_NET_ADMIN in the device netns for changelink","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sit: require CAP_NET_ADMIN in the device netns for changelink\n\nipip6_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 ipip6_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed. sit was the one tunnel type not covered\nby the recent series that added this check to the other changelink()\nhandlers.","state":0,"publishedAt":"2026-08-15T05:52:15.823+00:00","modifiedAt":"2026-10-19T21:19:25.695+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/sit.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5e6700b3bf98fe98d630bf9c939ad4c85ce95592\",\n \"lessThan\": \"cb41b308e9d867725d965b291dd085028e36a480\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5e6700b3bf98fe98d630bf9c939ad4c85ce95592\",\n \"lessThan\": \"c5a0ae895432596b2f464172da8218e2d84e2932\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5e6700b3bf98fe98d630bf9c939ad4c85ce95592\",\n \"lessThan\": \"7d139dec96691cde96cb40ed293e2d13d994fb4f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5e6700b3bf98fe98d630bf9c939ad4c85ce95592\",\n \"lessThan\": \"388ccffbd2e7e5e4271f291085a7451865705305\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5e6700b3bf98fe98d630bf9c939ad4c85ce95592\",\n \"lessThan\": \"c0ea1aedb37bb979e864ed7787975434bbd9db73\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5e6700b3bf98fe98d630bf9c939ad4c85ce95592\",\n \"lessThan\": \"3118e97dae533fb45964b87bbed1801afcff7c65\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5e6700b3bf98fe98d630bf9c939ad4c85ce95592\",\n \"lessThan\": \"99ae3248b33df94201915d9c32e7470cdf08cfcd\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5e6700b3bf98fe98d630bf9c939ad4c85ce95592\",\n \"lessThan\": \"27ccb68e7cccead5d8c611665a45d23032d468b3\",\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/sit.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3.11\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.11\",\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/cb41b308e9d867725d965b291dd085028e36a480","https://git.kernel.org/stable/c/c5a0ae895432596b2f464172da8218e2d84e2932","https://git.kernel.org/stable/c/7d139dec96691cde96cb40ed293e2d13d994fb4f","https://git.kernel.org/stable/c/388ccffbd2e7e5e4271f291085a7451865705305","https://git.kernel.org/stable/c/c0ea1aedb37bb979e864ed7787975434bbd9db73","https://git.kernel.org/stable/c/3118e97dae533fb45964b87bbed1801afcff7c65","https://git.kernel.org/stable/c/99ae3248b33df94201915d9c32e7470cdf08cfcd","https://git.kernel.org/stable/c/27ccb68e7cccead5d8c611665a45d23032d468b3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72061","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72061","identifiers":["CVE-2026-72061"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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