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net: ipip: 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: 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.

Announced Source revision 1
Original source ↗

CVE-2026-72053

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-2026-72053

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": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee",
        "lessThan": "a7d2642a50282322bc33f34ee7305f2b793df494",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee",
        "lessThan": "068ad9b85f681755f751ebab82ae98146cec163d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee",
        "lessThan": "91571643e554ae89a91942380d5f5361fb7060a2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee",
        "lessThan": "983cc4aa7e6f633b34c3ee743771252d7afa9a90",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee",
        "lessThan": "26544021d5c49cc6ae8a968ccb5033e6363854a4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee",
        "lessThan": "68cadc3698c7de88966d306d12ec9c6217da228a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee",
        "lessThan": "d49edcc65e0a37cc9b386a94415c5d6670ca8b71",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6c742e714d8c282fd8f8b22d3e20b5141738c1ee",
        "lessThan": "8211a26324667980a463c069469a818e71207e02",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/ipv4/ipip.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.12"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.12",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.266",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.217",
        "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/ipv4/ipip.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-72053

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41850 · Revision 1
Added to Heist Feed
Publisher date
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