251 lines
11 KiB
JSON
251 lines
11 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-2026-6426",
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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": "2026-04-16T11:09:18.538Z",
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"datePublished": "2026-08-10T21:22:29.414Z",
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"dateUpdated": "2026-11-06T19:10:26.679Z"
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},
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"containers": {
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"cna": {
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"title": "Qemu-kvm: vhost inflight migration vmstate integer type mismatch causes out-of-bounds access",
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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": "HIGH",
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"baseScore": 4.4,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "HIGH",
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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:H/UI:N/S:U/C:N/I:N/A:H",
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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 type mismatch vulnerability was found in QEMU's vhost inflight migration VMState handling. The destination buffer size is stored as a uint64_t but read by the VMS_VBUFFER load path as a signed int32_t. On little-endian hosts, a crafted incoming migration state with bit 31 set causes the value to be interpreted as negative and then implicitly converted to a very large size_t, leading qemu_get_buffer() to copy migration-stream data beyond the bounds of the mmap-backed inflight region.\n\nThis can result in a crash of the QEMU process or memory corruption. Exploitation requires control of the migration producer or write access to the migration channel, combined with a destination configured to use vhost inflight migration."
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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": "qemu-kvm",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:enterprise_linux:10"
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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": "qemu-kvm",
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"defaultStatus": "affected",
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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": "qemu-kvm",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/o:redhat:rhel_els:7"
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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": "qemu-kvm-ma",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/o:redhat:rhel_els:7"
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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 8",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "virt:rhel/qemu-kvm",
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"defaultStatus": "affected",
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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 Enterprise Linux 9",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "qemu-kvm",
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"defaultStatus": "affected",
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"cpes": [
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"cpe:/a:redhat:enterprise_linux:9"
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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 for NVIDIA 26",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "qemu-kvm",
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"defaultStatus": "unknown",
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"cpes": [
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"cpe:/a:redhat:enterprise_linux_nvidia:"
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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/security/cve/CVE-2026-6426",
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"tags": [
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"vdb-entry",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513498",
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"name": "RHBZ#2513498",
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"tags": [
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"issue-tracking",
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"x_refsource_REDHAT"
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]
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}
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],
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"datePublic": "2026-08-10T00:00:00.000Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-681",
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"description": "Incorrect Conversion between Numeric Types",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"x_redhatCweChain": "CWE-681: Incorrect Conversion between Numeric Types",
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"workarounds": [
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{
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"lang": "en",
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"value": "If vhost inflight migration is not required, it can be disabled by omitting the inflight parameter from the vhost-user device configuration. This prevents the vulnerable VMState deserialization path from being reached on the destination.\n\nEnvironments that require vhost inflight migration for live migration of vhost-user devices cannot use this mitigation and should prioritize applying the fix."
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-08-10T00:00:00.000Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-08-10T00:00:00.000Z",
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"value": "Made public."
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Red Hat would like to thank Seungjung Kim (Kyonggi University) for reporting this issue."
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}
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],
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"providerMetadata": {
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"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"shortName": "redhat",
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"dateUpdated": "2026-11-06T19:10:26.679Z"
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},
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"x_generator": {
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"engine": "cvelib 1.8.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-11T17:41:11.267441Z",
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"id": "CVE-2026-6426",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-11T17:51:23.060Z"
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}
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}
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]
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}
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} |