CVE-2026-72136 (GCVE-0-2026-72136)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:53 – Updated: 2026-10-16 18:44
VLAI
Title
xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 18:42 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7067 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f203b76d78092faf248db3f851840fbecf80b40e , < 04c1aa57d08471b1953bf27c84ac9b3d78d71831 (git)
Affected: f203b76d78092faf248db3f851840fbecf80b40e , < bdfd1c21d90e628a58a9de79e024cdfcbedfa15c (git)
Affected: f203b76d78092faf248db3f851840fbecf80b40e , < 80ec68bba11f7f387c0e4099c2d7b2c84943eb99 (git)
Affected: f203b76d78092faf248db3f851840fbecf80b40e , < e9c90756f10da334fb31552e52c61f1dba69f491 (git)
Affected: f203b76d78092faf248db3f851840fbecf80b40e , < 37b61946d278c7deb0d40ba8f2b6fc0478d61dab (git)
Affected: f203b76d78092faf248db3f851840fbecf80b40e , < 8ca2a19a987a7d1cb4c916ed9723a1c6993b4276 (git)
Affected: f203b76d78092faf248db3f851840fbecf80b40e , < 3ba2b2ef7d6a63b190f15cfc2b4ba0fba59928ea (git)
Affected: f203b76d78092faf248db3f851840fbecf80b40e , < 095515d89b19b6cc19dfcdc846f97403ed1ebce3 (git)
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Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/80ec68bba11f7f387c0e4099c2d7b2c84943eb99"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/8ca2a19a987a7d1cb4c916ed9723a1c6993b4276"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/bdfd1c21d90e628a58a9de79e024cdfcbedfa15c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e9c90756f10da334fb31552e52c61f1dba69f491"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-26T11:09:02+00:00",
      "cve": "CVE-2026-72136",
      "id": "CVE-2026-72136",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "186",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: xfrm: xfrm_interface: require CAP_NET_ADMIN in the device netns for changelink",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72136.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-10-27T01:21:01Z",
      "cve": "CVE-2026-72136",
      "id": "CVE-2026-72136",
      "initial_release_date": "2026-08-31T13:30:24Z",
      "product_status:known_affected": "396",
      "product_status:known_not_affected": "143",
      "product_status:recommended": "482",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-72136",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-72136.json",
      "version": "13"
    }
  }
}



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