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xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

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
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Publisher date
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