GHSA-R8VJ-9QGR-M84X

Vulnerability from github – Published: 2026-04-24 15:32 – Updated: 2026-06-01 06:30
VLAI
Details

A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.

Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-5367"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-130"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T13:16:21Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker\u0027s virtual machine port.",
  "id": "GHSA-r8vj-9qgr-m84x",
  "modified": "2026-06-01T06:30:25Z",
  "published": "2026-04-24T15:32:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5367"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:11694"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:11695"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:11696"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:11698"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:11700"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:11701"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:11702"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:22110"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:22111"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-5367"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455863"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/20/3"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/20/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}


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