CVE-2026-55653

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"https://access.redhat.com/errata/RHSA-2026:36759", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:47755", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:47756", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:47757", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:54387", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:58981", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:76748", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:76993", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:80513", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:82749", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:82750", 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"https://access.redhat.com/errata/RHSA-2026:82920", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:82921", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:82922", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:82923", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:89739", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:91232", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-55653", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2462351", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-415"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS)."}], "lastModified": "2026-10-30T08:16:57.497", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openbsd:openssh:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7BB9B2AD-A04E-4C93-9FAF-5DC02F69690B"}, {"criteria": "cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "87DEB507-5B64-47D7-9A50-3B87FD1E571F"}, {"criteria": "cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "932D137F-528B-4526-9A89-CD59FA1AB0FE"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}