{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "6.0"
              },
              {
                "last_affected": "6.0"
              },
              {
                "introduced": "7.0"
              },
              {
                "last_affected": "7.0"
              },
              {
                "introduced": "8.0"
              },
              {
                "last_affected": "8.0"
              },
              {
                "introduced": "9.0"
              },
              {
                "last_affected": "9.0"
              }
            ],
            "source": "CPE_STRING"
          },
          "events": [
            {
              "introduced": "d5dacb43fa30c2f6d7eebbd4c5fcf906c3b5d5d8"
            },
            {
              "last_affected": "94eb6858efecc1b4f02d8a6bd35e149f55c814c8"
            }
          ],
          "repo": "https://github.com/openssh/openssh-portable",
          "type": "GIT"
        }
      ],
      "versions": [
        "6.0",
        "7.0",
        "8.0",
        "9.0"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "redhat",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55654.json"
  },
  "details": "A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the availability of the SSH service.",
  "id": "CVE-2026-55654",
  "modified": "2026-07-10T03:54:36.975192669Z",
  "published": "2026-06-23T03:37:00.160Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://access.redhat.com/downloads/content/package-browser/"
    },
    {
      "type": "WEB",
      "url": "https://catalog.redhat.com/software/containers/"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:36759"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-55654"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55654.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55654"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2462493"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Openssh: heap out-of-bounds read in red hat enterprise linux versions of openssh gssapi indicator cleanup due to missing null sentinel termination"
}