net: ipip: require CAP_NET_ADMIN in the device netns for changelink
In the Linux kernel, the following vulnerability has been resolved: net: ipip: require CAP_NET_ADMIN in the device netns for changelink ipip_changelink() operates 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 ipip_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.266, 5.15.217, 6.1.178, 6.12.97, 6.18.40, 6.6.145, 7.1.5
- CVEs
- CVE-2026-72053
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 22:39 UTC · Revision 1
Source evidence
net: ipip: 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: ipip: require CAP_NET_ADMIN in the device netns for changelink ipip_changelink() operates 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 ipip_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
osv:CVE-2026-72053
Kernel
Fixed versions: 5.10.266, 5.15.217, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5
Complete source record
{
"id": "c70d6e543e11005b737163ca939ebc3a114a9e9c78f99baf0a89bb1ed15adf3a",
"url": "https://osv.dev/vulnerability/CVE-2026-72053",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "net: ipip: require CAP_NET_ADMIN in the device netns for changelink",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net: ipip: require CAP_NET_ADMIN in the device netns for changelink ipip_changelink() operates 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 ipip_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.",
"evidence": "osv:CVE-2026-72053",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.10.266",
"evidence": "/affected/1/ranges"
},
{
"value": "5.15.217",
"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-2026-72053",
"aliases": [
"CVE-2026-72053"
],
"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": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee"
},
{
"fixed": "a7d2642a50282322bc33f34ee7305f2b793df494"
},
{
"fixed": "068ad9b85f681755f751ebab82ae98146cec163d"
},
{
"fixed": "91571643e554ae89a91942380d5f5361fb7060a2"
},
{
"fixed": "983cc4aa7e6f633b34c3ee743771252d7afa9a90"
},
{
"fixed": "26544021d5c49cc6ae8a968ccb5033e6363854a4"
},
{
"fixed": "68cadc3698c7de88966d306d12ec9c6217da228a"
},
{
"fixed": "d49edcc65e0a37cc9b386a94415c5d6670ca8b71"
},
{
"fixed": "8211a26324667980a463c069469a818e71207e02"
}
]
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72053.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.12.0"
},
{
"fixed": "5.10.266"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.15.217"
}
]
},
{
"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-2026-72053.json"
}
}
],
"modified": "2026-10-28T02:30:23.941228559Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/068ad9b85f681755f751ebab82ae98146cec163d",
"https://git.kernel.org/stable/c/26544021d5c49cc6ae8a968ccb5033e6363854a4",
"https://git.kernel.org/stable/c/68cadc3698c7de88966d306d12ec9c6217da228a",
"https://git.kernel.org/stable/c/8211a26324667980a463c069469a818e71207e02",
"https://git.kernel.org/stable/c/91571643e554ae89a91942380d5f5361fb7060a2",
"https://git.kernel.org/stable/c/983cc4aa7e6f633b34c3ee743771252d7afa9a90",
"https://git.kernel.org/stable/c/a7d2642a50282322bc33f34ee7305f2b793df494",
"https://git.kernel.org/stable/c/d49edcc65e0a37cc9b386a94415c5d6670ca8b71",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72053.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-72053",
"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-2026-72053.json"
}
},
"related_cves": [
{
"value": "CVE-2026-72053",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 490622,
"published_at": "2026-08-15T05:52:09.924+00:00"
}