HighFix available
net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink ip6gre_changelink() and ip6erspan_changelink() operate on at most two netns, dev_net(dev) and the tunnel link netns t->net. They differ once the device is created in or moved to a netns other than the one the request runs in. The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev), so a caller privileged there but not in t->net can rewrite a tunnel that lives in t->net. Gate both ops on rtnl_dev_link_net_capable() at their top, before any attribute is parsed.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.261, 5.15.212, 6.1.178, 6.12.97, 6.18.40, 6.6.145, 7.1.5
- CVEs
- CVE-2026-72052
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 17:10 UTC · Revision 1
Source evidence
net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink
core-osv · Original sourcePublished 15 Aug 2026, 05:52 UTC
In the Linux kernel, the following vulnerability has been resolved: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink ip6gre_changelink() and ip6erspan_changelink() operate on at most two netns, dev_net(dev) and the tunnel link netns t->net. They differ once the device is created in or moved to a netns other than the one the request runs in. The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev), so a caller privileged there but not in t->net can rewrite a tunnel that lives in t->net. Gate both ops on rtnl_dev_link_net_capable() at their top, before any attribute is parsed.
osv:CVE-2026-72052
Kernel
Fixed versions: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5
Complete source record
{
"id": "09b7545f59c283d0de4b3c9dc8c843ebd0a2db2b20374fb30d0b79ff5b365595",
"url": "https://osv.dev/vulnerability/CVE-2026-72052",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink ip6gre_changelink() and ip6erspan_changelink() operate on at most two netns, dev_net(dev) and the tunnel link netns t->net. They differ once the device is created in or moved to a netns other than the one the request runs in. The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev), so a caller privileged there but not in t->net can rewrite a tunnel that lives in t->net. Gate both ops on rtnl_dev_link_net_capable() at their top, before any attribute is parsed.",
"evidence": "osv:CVE-2026-72052",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.10.261",
"evidence": "/affected/1/ranges"
},
{
"value": "5.15.212",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.178",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.145",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.97",
"evidence": "/affected/1/ranges"
},
{
"value": "6.18.40",
"evidence": "/affected/1/ranges"
},
{
"value": "7.1.5",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "CVE-2026-72052",
"aliases": [
"CVE-2026-72052"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "690afc165bb314354667f67157c1a1aea7dc797a"
},
{
"fixed": "129f8939e5af683cec3a1a5edcb40a64636ad81e"
},
{
"fixed": "e3724dedf57761c6de52f4d604ec74f66fd61611"
},
{
"fixed": "220162c9fedbe992da70d70f50a10da4f45f914c"
},
{
"fixed": "1d4d8ee002083ca4ead5353662bf8362428af57f"
},
{
"fixed": "0caa9f348f8b5356900de77b0bb89a697c4aff20"
},
{
"fixed": "03d8843b143ebbbfaf48511922abc6e886575a61"
},
{
"fixed": "c38c8b0db3c65b597e7ece317b6cb59de3d15e69"
},
{
"fixed": "f00a50876d2818bd6dc86fa98b3ef360884c53c8"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "4.19.100"
},
{
"fixed": "4.20"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "5.4.16"
},
{
"fixed": "5.5"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "d0201d2405dac8d9b16773e97709925e397552d0"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "7943bb0f06365cf5e32f3cf8a6b29eeae981fb8a"
}
]
}
],
"versions": [
"v4.19.325",
"v4.19.324",
"v4.19.323",
"v4.19.322",
"v4.19.321",
"v4.19.320",
"v4.19.319",
"v4.19.318",
"v4.19.317",
"v4.19.316",
"v4.19.315",
"v4.19.314",
"v4.19.313",
"v4.19.312",
"v4.19.311",
"v4.19.310",
"v4.19.309",
"v4.19.308",
"v4.19.307",
"v4.19.306",
"v4.19.305",
"v4.19.304",
"v4.19.303",
"v4.19.302",
"v4.19.301",
"v4.19.300",
"v4.19.299",
"v4.19.298",
"v4.19.297",
"v4.19.296",
"v4.19.295",
"v4.19.294",
"v4.19.293",
"v4.19.292",
"v4.19.291",
"v4.19.290",
"v4.19.289",
"v4.19.288",
"v4.19.287",
"v4.19.286",
"v4.19.285",
"v4.19.284",
"v4.19.283",
"v4.19.282",
"v4.19.281",
"v4.19.280",
"v4.19.279",
"v4.19.278",
"v4.19.277",
"v4.19.276",
"v4.19.275",
"v4.19.274",
"v4.19.273",
"v4.19.272",
"v4.19.271",
"v4.19.270",
"v4.19.269",
"v4.19.268",
"v4.19.267",
"v4.19.266",
"v4.19.265",
"v4.19.264",
"v4.19.263",
"v4.19.262",
"v4.19.261",
"v4.19.260",
"v4.19.259",
"v4.19.258",
"v4.19.257",
"v4.19.256",
"v4.19.255",
"v4.19.254",
"v4.19.253",
"v4.19.252",
"v4.19.251",
"v4.19.250",
"v4.19.249",
"v4.19.248",
"v4.19.247",
"v4.19.246",
"v4.19.245",
"v4.19.244",
"v4.19.243",
"v4.19.242",
"v4.19.241",
"v4.19.240",
"v4.19.239",
"v4.19.238",
"v4.19.237",
"v4.19.236",
"v4.19.235",
"v4.19.234",
"v4.19.233",
"v4.19.232",
"v4.19.231",
"v4.19.230",
"v4.19.229",
"v4.19.228",
"v4.19.227",
"v4.19.226",
"v4.19.225",
"v4.19.224",
"v4.19.223",
"v4.19.222",
"v4.19.221",
"v4.19.220",
"v4.19.219",
"v4.19.218",
"v4.19.217",
"v4.19.216",
"v4.19.215",
"v4.19.214",
"v4.19.213",
"v4.19.212",
"v4.19.211",
"v4.19.210",
"v4.19.209",
"v4.19.208",
"v4.19.207",
"v4.19.206",
"v4.19.205",
"v4.19.204",
"v4.19.203",
"v4.19.202",
"v4.19.201",
"v4.19.200",
"v4.19.199",
"v4.19.198",
"v4.19.197",
"v4.19.196",
"v4.19.195",
"v4.19.194",
"v4.19.193",
"v4.19.192",
"v4.19.191",
"v4.19.190",
"v4.19.189",
"v4.19.188",
"v4.19.187",
"v4.19.186",
"v4.19.185",
"v4.19.184",
"v4.19.183",
"v4.19.182",
"v4.19.181",
"v4.19.180",
"v4.19.179",
"v4.19.178",
"v4.19.177",
"v4.19.176",
"v4.19.175",
"v4.19.174",
"v4.19.173",
"v4.19.172",
"v4.19.171",
"v4.19.170",
"v4.19.169",
"v4.19.168",
"v4.19.167",
"v4.19.166",
"v4.19.165",
"v4.19.164",
"v4.19.163",
"v4.19.162",
"v4.19.161",
"v4.19.160",
"v4.19.159",
"v4.19.158",
"v4.19.157",
"v4.19.156",
"v4.19.155",
"v4.19.154",
"v4.19.153",
"v4.19.152",
"v4.19.151",
"v4.19.150",
"v4.19.149",
"v4.19.148",
"v4.19.147",
"v4.19.146",
"v4.19.145",
"v4.19.144",
"v4.19.143",
"v4.19.142",
"v4.19.141",
"v4.19.140",
"v4.19.139",
"v4.19.138",
"v4.19.137",
"v4.19.136",
"v4.19.135",
"v4.19.134",
"v4.19.133",
"v4.19.132",
"v4.19.131",
"v4.19.130",
"v4.19.129",
"v4.19.128",
"v4.19.127",
"v4.19.126",
"v4.19.125",
"v4.19.124",
"v4.19.123",
"v4.19.122",
"v4.19.121",
"v4.19.120",
"v4.19.119",
"v4.19.118",
"v4.19.117",
"v4.19.116",
"v4.19.115",
"v4.19.114",
"v4.19.113",
"v4.19.112",
"v4.19.111",
"v4.19.110",
"v4.19.109",
"v4.19.108",
"v4.19.107",
"v4.19.106",
"v4.19.105",
"v4.19.104",
"v4.19.103",
"v4.19.102",
"v4.19.101",
"v4.19.100",
"v5.4.302",
"v5.4.301",
"v5.4.300",
"v5.4.299",
"v5.4.298",
"v5.4.297",
"v5.4.296",
"v5.4.295",
"v5.4.294",
"v5.4.293",
"v5.4.292",
"v5.4.291",
"v5.4.290",
"v5.4.289",
"v5.4.288",
"v5.4.287",
"v5.4.286",
"v5.4.285",
"v5.4.284",
"v5.4.283",
"v5.4.282",
"v5.4.281",
"v5.4.280",
"v5.4.279",
"v5.4.278",
"v5.4.277",
"v5.4.276",
"v5.4.275",
"v5.4.274",
"v5.4.273",
"v5.4.272",
"v5.4.271",
"v5.4.270",
"v5.4.269",
"v5.4.268",
"v5.4.267",
"v5.4.266",
"v5.4.265",
"v5.4.264",
"v5.4.263",
"v5.4.262",
"v5.4.261",
"v5.4.260",
"v5.4.259",
"v5.4.258",
"v5.4.257",
"v5.4.256",
"v5.4.255",
"v5.4.254",
"v5.4.253",
"v5.4.252",
"v5.4.251",
"v5.4.250",
"v5.4.249",
"v5.4.248",
"v5.4.247",
"v5.4.246",
"v5.4.245",
"v5.4.244",
"v5.4.243",
"v5.4.242",
"v5.4.241",
"v5.4.240",
"v5.4.239",
"v5.4.238",
"v5.4.237",
"v5.4.236",
"v5.4.235",
"v5.4.234",
"v5.4.233",
"v5.4.232",
"v5.4.231",
"v5.4.230",
"v5.4.229",
"v5.4.228",
"v5.4.227",
"v5.4.226",
"v5.4.225",
"v5.4.224",
"v5.4.223",
"v5.4.222",
"v5.4.221",
"v5.4.220",
"v5.4.219",
"v5.4.218",
"v5.4.217",
"v5.4.216",
"v5.4.215",
"v5.4.214",
"v5.4.213",
"v5.4.212",
"v5.4.211",
"v5.4.210",
"v5.4.209",
"v5.4.208",
"v5.4.207",
"v5.4.206",
"v5.4.205",
"v5.4.204",
"v5.4.203",
"v5.4.202",
"v5.4.201",
"v5.4.200",
"v5.4.199",
"v5.4.198",
"v5.4.197",
"v5.4.196",
"v5.4.195",
"v5.4.194",
"v5.4.193",
"v5.4.192",
"v5.4.191",
"v5.4.190",
"v5.4.189",
"v5.4.188",
"v5.4.187",
"v5.4.186",
"v5.4.185",
"v5.4.184",
"v5.4.183",
"v5.4.182",
"v5.4.181",
"v5.4.180",
"v5.4.179",
"v5.4.178",
"v5.4.177",
"v5.4.176",
"v5.4.175",
"v5.4.174",
"v5.4.173",
"v5.4.172",
"v5.4.171",
"v5.4.170",
"v5.4.169",
"v5.4.168",
"v5.4.167",
"v5.4.166",
"v5.4.165",
"v5.4.164",
"v5.4.163",
"v5.4.162",
"v5.4.161",
"v5.4.160",
"v5.4.159",
"v5.4.158",
"v5.4.157",
"v5.4.156",
"v5.4.155",
"v5.4.154",
"v5.4.153",
"v5.4.152",
"v5.4.151",
"v5.4.150",
"v5.4.149",
"v5.4.148",
"v5.4.147",
"v5.4.146",
"v5.4.145",
"v5.4.144",
"v5.4.143",
"v5.4.142",
"v5.4.141",
"v5.4.140",
"v5.4.139",
"v5.4.138",
"v5.4.137",
"v5.4.136",
"v5.4.135",
"v5.4.134",
"v5.4.133",
"v5.4.132",
"v5.4.131",
"v5.4.130",
"v5.4.129",
"v5.4.128",
"v5.4.127",
"v5.4.126",
"v5.4.125",
"v5.4.124",
"v5.4.123",
"v5.4.122",
"v5.4.121",
"v5.4.120",
"v5.4.119",
"v5.4.118",
"v5.4.117",
"v5.4.116",
"v5.4.115",
"v5.4.114",
"v5.4.113",
"v5.4.112",
"v5.4.111",
"v5.4.110",
"v5.4.109",
"v5.4.108",
"v5.4.107",
"v5.4.106",
"v5.4.105",
"v5.4.104",
"v5.4.103",
"v5.4.102",
"v5.4.101",
"v5.4.100",
"v5.4.99",
"v5.4.98",
"v5.4.97",
"v5.4.96",
"v5.4.95",
"v5.4.94",
"v5.4.93",
"v5.4.92",
"v5.4.91",
"v5.4.90",
"v5.4.89",
"v5.4.88",
"v5.4.87",
"v5.4.86",
"v5.4.85",
"v5.4.84",
"v5.4.83",
"v5.4.82",
"v5.4.81",
"v5.4.80",
"v5.4.79",
"v5.4.78",
"v5.4.77",
"v5.4.76",
"v5.4.75",
"v5.4.74",
"v5.4.73",
"v5.4.72",
"v5.4.71",
"v5.4.70",
"v5.4.69",
"v5.4.68",
"v5.4.67",
"v5.4.66",
"v5.4.65",
"v5.4.64",
"v5.4.63",
"v5.4.62",
"v5.4.61",
"v5.4.60",
"v5.4.59",
"v5.4.58",
"v5.4.57",
"v5.4.56",
"v5.4.55",
"v5.4.54",
"v5.4.53",
"v5.4.52",
"v5.4.51",
"v5.4.50",
"v5.4.49",
"v5.4.48",
"v5.4.47",
"v5.4.46",
"v5.4.45",
"v5.4.44",
"v5.4.43",
"v5.4.42",
"v5.4.41",
"v5.4.40",
"v5.4.39",
"v5.4.38",
"v5.4.37",
"v5.4.36",
"v5.4.35",
"v5.4.34",
"v5.4.33",
"v5.4.32",
"v5.4.31",
"v5.4.30",
"v5.4.29",
"v5.4.28",
"v5.4.27",
"v5.4.26",
"v5.4.25",
"v5.4.24",
"v5.4.23",
"v5.4.22",
"v5.4.21",
"v5.4.20",
"v5.4.19",
"v5.4.18",
"v5.4.17",
"v5.4.16"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72052.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.5.0"
},
{
"fixed": "5.10.261"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.15.212"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.16.0"
},
{
"fixed": "6.1.178"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.6.145"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.7.0"
},
{
"fixed": "6.12.97"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.40"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.19.0"
},
{
"fixed": "7.1.5"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72052.json"
}
}
],
"modified": "2026-10-28T02:30:30.506613235Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/03d8843b143ebbbfaf48511922abc6e886575a61",
"https://git.kernel.org/stable/c/0caa9f348f8b5356900de77b0bb89a697c4aff20",
"https://git.kernel.org/stable/c/129f8939e5af683cec3a1a5edcb40a64636ad81e",
"https://git.kernel.org/stable/c/1d4d8ee002083ca4ead5353662bf8362428af57f",
"https://git.kernel.org/stable/c/220162c9fedbe992da70d70f50a10da4f45f914c",
"https://git.kernel.org/stable/c/c38c8b0db3c65b597e7ece317b6cb59de3d15e69",
"https://git.kernel.org/stable/c/e3724dedf57761c6de52f4d604ec74f66fd61611",
"https://git.kernel.org/stable/c/f00a50876d2818bd6dc86fa98b3ef360884c53c8",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72052.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-72052",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72052.json"
}
},
"related_cves": [
{
"value": "CVE-2026-72052",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 497706,
"published_at": "2026-08-15T05:52:09.194+00:00"
}