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CVE-2026-55654 Openssh: heap out-of-bounds read in red hat enterprise linux versions of openssh gssapi indicator cleanup due to missing null sentinel termination

🗓️ 23 Jun 2026 03:37:00Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 61 Views

OpenSSH heap out-of-bounds read from missing NULL terminator in Generic Security Service indicators, causing SSH DoS.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-55654
23 Jun 202603:37
attackerkb
Circl
CVE-2026-55654
23 Jun 202607:53
circl
CVE
CVE-2026-55654
23 Jun 202603:37
cve
Debian CVE
CVE-2026-55654
23 Jun 202603:37
debiancve
EUVD
EUVD-2026-38414
23 Jun 202603:37
euvd
Fedora
[SECURITY] Fedora 44 Update: openssh-10.2p1-12.fc44
9 Jul 202600:57
fedora
Fedora
[SECURITY] Fedora 43 Update: openssh-10.0p1-10.fc43
11 Jul 202600:55
fedora
Tenable Nessus
Fedora 43 : openssh (2026-95b955a09b)
11 Jul 202600:00
nessus
Tenable Nessus
Fedora 44 : openssh (2026-a80275b42d)
9 Jul 202600:00
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-55654
23 Jun 202600:00
nessus
Rows per page
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "openssh-main",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "10.3p1-6.hum1",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 10",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "openssh",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:10"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "openssh",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "openssh",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "openssh",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "openssh",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "rhcos",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/a:redhat:openshift:4"
    ]
  }
]

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