391 lines
16 KiB
JSON
391 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-55654",
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"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"state": "PUBLISHED",
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"assignerShortName": "redhat",
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"dateReserved": "2026-06-16T23:55:05.737Z",
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"datePublished": "2026-06-23T03:37:00.160Z",
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"dateUpdated": "2026-11-06T19:07:12.301Z"
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},
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"containers": {
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"cna": {
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"title": "Openssh: heap out-of-bounds read in red hat enterprise linux versions of openssh gssapi indicator cleanup due to missing null sentinel termination",
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"metrics": [
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{
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"other": {
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"content": {
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"value": "Low",
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"namespace": "https://access.redhat.com/security/updates/classification/"
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},
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"type": "Red Hat severity rating"
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}
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},
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{
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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 3.7,
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"baseSeverity": "LOW",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
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"version": "3.1"
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},
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"format": "CVSS"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "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."
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}
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],
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"affected": [
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 10",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openssh",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "0:9.9p1-25.el10_2",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/o:redhat:enterprise_linux:10.2"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 9",
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"packageName": "openssh",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "0:9.9p1-9.el9_8",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:enterprise_linux:9::appstream",
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"cpe:/o:redhat:enterprise_linux:9::baseos"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 9",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openssh",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "0:9.9p1-9.el9_8",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpe:/a:redhat:enterprise_linux:9::appstream",
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},
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{
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"vendor": "Red Hat",
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"packageName": "openssh-main",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "10.3p1-6.hum1",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:hummingbird:1"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Update Infrastructure 5",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhui5/installer-rhel9",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "1786435483",
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"lessThan": "*",
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"versionType": "rpm",
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}
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],
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"cpes": [
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"cpe:/a:redhat:rhui:5::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"versions": [
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{
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"version": "1786533529",
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"lessThan": "*",
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}
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"cpes": [
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Update Infrastructure 5",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhui5/installer-tp-rhel9",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "1787135742",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:rhui:5::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Update Infrastructure 5",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhui5/rhua-tp-rhel9",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "1787241260",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:rhui:5::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 6",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openssh",
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"defaultStatus": "unaffected",
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"cpes": [
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"cpe:/o:redhat:rhel_els:6"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 7",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openssh",
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"defaultStatus": "unaffected",
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"cpe:/o:redhat:rhel_els:7"
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 8",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openssh",
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"defaultStatus": "unaffected",
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"cpes": [
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"cpe:/a:redhat:enterprise_linux:8"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 4",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift/ose-rhel-coreos-8",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:4"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 4",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift/ose-rhel-coreos-9",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:4"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenShift Container Platform 5",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "openshift/ose-rhel-coreos-9",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:openshift:5"
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]
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}
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],
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"references": [
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:36759",
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"url": "https://access.redhat.com/errata/RHSA-2026:47756",
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"name": "RHSA-2026:47756",
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"problemTypes": [
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{
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],
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{
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{
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"lang": "en",
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