CVE-2026-72053 (GCVE-0-2026-72053)
Vulnerability from cvelistv5
Published
2026-08-15 05:52
Modified
2026-10-19 21:19
Severity ?
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 6c742e714d8c282fd8f8b22d3e20b5141738c1ee
Version: 6c742e714d8c282fd8f8b22d3e20b5141738c1ee
Version: 6c742e714d8c282fd8f8b22d3e20b5141738c1ee
Version: 6c742e714d8c282fd8f8b22d3e20b5141738c1ee
Version: 6c742e714d8c282fd8f8b22d3e20b5141738c1ee
Version: 6c742e714d8c282fd8f8b22d3e20b5141738c1ee
Version: 6c742e714d8c282fd8f8b22d3e20b5141738c1ee
Version: 6c742e714d8c282fd8f8b22d3e20b5141738c1ee
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The rtnl\\nchangelink path checks CAP_NET_ADMIN only against dev_net(dev), so a\\ncaller privileged there but not in t-\u003enet can rewrite a tunnel that\\nlives in t-\u003enet.\\n\\nGate ipip_changelink() on rtnl_dev_link_net_capable() at its top,\\nbefore any attribute is parsed.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.266\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.217\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.178\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.145\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.97\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.40\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.1.5\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.2\", \"versionStartIncluding\": \"3.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-23T12:46:35.344Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-72053\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T21:19:25.074Z\", \"dateReserved\": \"2026-08-09T03:40:39.902Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-08-15T05:52:09.924Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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