278 lines
11 KiB
JSON
278 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-2026-78409",
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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": "2026-08-24T14:40:18.012Z",
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"datePublished": "2026-09-02T15:11:47.184Z",
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"dateUpdated": "2026-11-04T23:37:36.374Z"
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},
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"containers": {
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"cna": {
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"title": "Util-linux: util-linux: x-mount.subdir detached-tree resolution can escape via intermediate symlinks",
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"metrics": [
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{
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"other": {
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"content": {
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"value": "Important",
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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": "LOCAL",
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"availabilityImpact": "HIGH",
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"baseScore": 7,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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": "The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to open_tree() with AT_SYMLINK_NOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with an fstab-authorized X-mount.subdir entry can attach a host path at the intended mountpoint."
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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 Hardened Images",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "util-linux-main",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "2.42.2-3.4.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 Enterprise Linux 10",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "util-linux",
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"defaultStatus": "unaffected",
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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 7",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "util-linux",
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"defaultStatus": "unaffected",
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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": "util-linux",
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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 Enterprise Linux 9",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "rhel8/flatpak-runtime",
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"defaultStatus": "unaffected",
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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 9",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "rhel8/flatpak-sdk",
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"defaultStatus": "unaffected",
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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 9",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "util-linux",
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"defaultStatus": "unaffected",
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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 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": "unaffected",
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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": "unaffected",
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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": "unaffected",
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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-2026:63162",
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"name": "RHSA-2026:63162",
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"tags": [
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"vendor-advisory",
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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://access.redhat.com/security/cve/CVE-2026-78409",
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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=2522607",
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"name": "RHBZ#2522607",
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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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"url": "https://github.com/util-linux/util-linux/security/advisories/GHSA-8f2p-47x3-43mv"
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}
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],
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"datePublic": "2026-09-02T00:00:00.000Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-59",
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"description": "Improper Link Resolution Before File Access",
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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-59: Improper Link Resolution Before File Access",
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"workarounds": [
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{
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"lang": "en",
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"value": "Upgrade to util-linux v2.41.6, v2.42.3, or later. Until a fix is applied, do not allow unprivileged /etc/fstab entries that specify X-mount.subdir."
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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": "2026-06-17T00:00:00.000Z",
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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": "2026-09-02T00:00:00.000Z",
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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": "Upstream acknowledges Zhuorao Yang (Huawei Cloud) as the original reporter."
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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": "2026-11-04T23:37:36.374Z"
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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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"references": [
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{
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"url": "https://github.com/util-linux/util-linux/security/advisories/GHSA-8f2p-47x3-43mv",
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"tags": [
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"exploit"
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]
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}
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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": "2026-09-02T15:29:06.011028Z",
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"id": "CVE-2026-78409",
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"options": [
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{
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"Exploitation": "poc"
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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": "total"
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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": "2026-09-02T15:31:33.985Z"
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}
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}
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]
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}
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} |