net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink
In the Linux kernel, the following vulnerability has been resolved: net: ip6_vti: require CAP_NET_ADMIN in the device netns for changelink vti6_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 vti6_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
CVE-2026-72055
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-72055
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "61220ab349485d911083d0b7990ccd3db6c63297",
"lessThan": "f5254e7766b4ac02b66b2ccef896cd278503cb11",
"versionType": "git"
},
{
"status": "affected",
"version": "61220ab349485d911083d0b7990ccd3db6c63297",
"lessThan": "ef897249dc957089e6f7f11ceea699e093ad51bd",
"versionType": "git"
},
{
"status": "affected",
"version": "61220ab349485d911083d0b7990ccd3db6c63297",
"lessThan": "f6e8b52a2cb3bbd72ddc2d44e474b907b9dcf5ba",
"versionType": "git"
},
{
"status": "affected",
"version": "61220ab349485d911083d0b7990ccd3db6c63297",
"lessThan": "c64b9ae7eb97e81d54b792910a3aeafd92566c79",
"versionType": "git"
},
{
"status": "affected",
"version": "61220ab349485d911083d0b7990ccd3db6c63297",
"lessThan": "b2b61c540571b3cc2f461e2a579ba2cc8c2a52cf",
"versionType": "git"
},
{
"status": "affected",
"version": "61220ab349485d911083d0b7990ccd3db6c63297",
"lessThan": "0b2f9c908f930ec4be17d389723f9a202d6a883c",
"versionType": "git"
},
{
"status": "affected",
"version": "61220ab349485d911083d0b7990ccd3db6c63297",
"lessThan": "f97e93ebf2f9b8ef3b87f7a9371255e84d151587",
"versionType": "git"
},
{
"status": "affected",
"version": "61220ab349485d911083d0b7990ccd3db6c63297",
"lessThan": "e2ac3b242c37dff323a964962e43854f4b1a2b79",
"versionType": "git"
}
],
"programFiles": [
"net/ipv6/ip6_vti.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv6/ip6_vti.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72055
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41852 · Revision 1
- Added to Heist Feed
- Publisher date