{"id":"CVE-2026-72136","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink\n\nxfrmi_changelink() operates on at most two netns, dev_net(dev) and the\ninterface link ne…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink\n\nxfrmi_changelink() operates on at most two netns, dev_net(dev) and the\ninterface link ne…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-1220"],"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 9"],"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:17:11.460","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72136","references":[{"url":"https://git.kernel.org/stable/c/04c1aa57d08471b1953bf27c84ac9b3d78d71831","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/095515d89b19b6cc19dfcdc846f97403ed1ebce3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/37b61946d278c7deb0d40ba8f2b6fc0478d61dab","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/80ec68bba11f7f387c0e4099c2d7b2c84943eb99","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8ca2a19a987a7d1cb4c916ed9723a1c6993b4276","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bdfd1c21d90e628a58a9de79e024cdfcbedfa15c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e9c90756f10da334fb31552e52c61f1dba69f491","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72136.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-72136"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2516710"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72136"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72136"},{"url":"https://kernelcve.org/list/?q=CVE-2026-72136"},{"url":"https://lore.kernel.org/linux-cve-announce/2026081531-CVE-2026-72136-a058@gregkh/T"}],"tags":["nvd","csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00169,"epssPercentile":0.06197,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:42:42.776069Z"},"scores":{"nvd":8.8,"vendor":6.1,"cna":8.8},"ingestedAt":"2026-10-16T19:46:24.427Z","slug":"CVE-2026-72136","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink\n\nxfrmi_changelink() operates on at most two netns, dev_net(dev) and the\ninterface link netns xi->net. They differ once the device is created in\nor moved to a netns other than the one the request runs in. The rtnl\nchangelink path checks CAP_NET_ADMIN only against dev_net(dev), so a\ncaller privileged there but not in xi->net can rewrite an interface that\nlives in xi->net.\n\nGate xfrmi_changelink() on rtnl_dev_link_net_capable() at its top,\nbefore any attribute is parsed.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72136.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":230266,"id":"CVE-2026-72136","ts":1793130912167,"field":"cvss","old":"6.1","new":"8.8"},{"seq":230265,"id":"CVE-2026-72136","ts":1793130912167,"field":"severity","old":"medium","new":"high"},{"seq":229294,"id":"CVE-2026-72136","ts":1793019668296,"field":"cvss","old":"8.8","new":"6.1"},{"seq":229293,"id":"CVE-2026-72136","ts":1793019668296,"field":"severity","old":"high","new":"medium"}]}