xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink
In the Linux kernel, the following vulnerability has been resolved: xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink xfrmi_changelink() operates on at most two netns, dev_net(dev) and the interface link netns xi->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 xi->net can rewrite an interface that lives in xi->net. Gate xfrmi_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed.
CVE-2026-72136
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-2026-72136
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": "f203b76d78092faf248db3f851840fbecf80b40e",
"lessThan": "04c1aa57d08471b1953bf27c84ac9b3d78d71831",
"versionType": "git"
},
{
"status": "affected",
"version": "f203b76d78092faf248db3f851840fbecf80b40e",
"lessThan": "bdfd1c21d90e628a58a9de79e024cdfcbedfa15c",
"versionType": "git"
},
{
"status": "affected",
"version": "f203b76d78092faf248db3f851840fbecf80b40e",
"lessThan": "80ec68bba11f7f387c0e4099c2d7b2c84943eb99",
"versionType": "git"
},
{
"status": "affected",
"version": "f203b76d78092faf248db3f851840fbecf80b40e",
"lessThan": "e9c90756f10da334fb31552e52c61f1dba69f491",
"versionType": "git"
},
{
"status": "affected",
"version": "f203b76d78092faf248db3f851840fbecf80b40e",
"lessThan": "37b61946d278c7deb0d40ba8f2b6fc0478d61dab",
"versionType": "git"
},
{
"status": "affected",
"version": "f203b76d78092faf248db3f851840fbecf80b40e",
"lessThan": "8ca2a19a987a7d1cb4c916ed9723a1c6993b4276",
"versionType": "git"
},
{
"status": "affected",
"version": "f203b76d78092faf248db3f851840fbecf80b40e",
"lessThan": "3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea",
"versionType": "git"
},
{
"status": "affected",
"version": "f203b76d78092faf248db3f851840fbecf80b40e",
"lessThan": "095515d89b19b6cc19dfcdc846f97403ed1ebce3",
"versionType": "git"
}
],
"programFiles": [
"net/xfrm/xfrm_interface_core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.19",
"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/xfrm/xfrm_interface_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72136
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #32955 · Revision 1
- Added to Heist Feed
- Publisher date