{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-88924", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-10T14:04:13.603Z", "datePublished": "2026-09-10T14:32:30.644Z", "dateUpdated": "2026-10-15T06:42:19.083Z" }, "containers": { "cna": { "title": "Gvfs: gvfs-admin socket ownership race permits local root", "metrics": [ { "other": { "content": { "value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the ownership of newly created private D-Bus sockets by calling the link-following chown() function on a pathname inside a user-controlled directory. A local attacker can exploit this via a Time-of-Check Time-of-Use (TOCTOU) race condition and exchange the socket pathname with a symbolic link pointing to an arbitrary root-owned file (such as /etc/pam.d/su). The daemon subsequently follows the symlink and changes the ownership of the targeted root-owned file to the attacker's user ID. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root." } ], "affected": [ { "vendor": "GNOME", "product": "gvfs", "versions": [ { "status": "affected", "version": "1.48.1", "lessThan": "1.62.0", "versionType": "semver" }, { "status": "affected", "version": "1.48.1", "lessThan": "1.60.3", "versionType": "semver" }, { "status": "affected", "version": "1.48.1", "lessThan": "1.58.5", "versionType": "semver" } ], "packageName": "gvfs", "collectionURL": "https://gitlab.gnome.org/GNOME/gvfs", "defaultStatus": "unaffected" }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "gvfs", "defaultStatus": "affected", "versions": [ { "version": "0:1.54.4-4.el10_2.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/o:redhat:enterprise_linux:10.2" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "gvfs", "defaultStatus": "affected", "versions": [ { "version": "0:1.48.1-8.el9_8.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "gvfs", "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": "gvfs", "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": "gvfs", "defaultStatus": "unaffected", "cpes": [ "cpe:/o:redhat:enterprise_linux:8" ] } ], "references": [ { "url": "https://access.redhat.com/errata/RHSA-2026:73998", "name": "RHSA-2026:73998", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:74370", "name": "RHSA-2026:74370", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2026-88924", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531456", "name": "RHBZ#2531456", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] }, { "url": "https://gitlab.gnome.org/GNOME/gvfs/-/issues/875" } ], "datePublic": "2026-09-09T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-367", "description": "Time-of-check Time-of-use (TOCTOU) Race Condition", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition", "workarounds": [ { "lang": "en", "value": "To mitigate this issue, adjust Polkit rules to require password authentication to start gvfsd-admin or remove execute permissions of the gvfsd-admin binary to prevent execution." } ], "timeline": [ { "lang": "en", "time": "2026-09-10T12:44:21.633Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-09-09T00:00:00.000Z", "value": "Made public." } ], "credits": [ { "lang": "en", "value": "Red Hat would like to thank lain for reporting this issue." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-10-15T06:42:19.083Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "references": [ { "url": "https://gitlab.gnome.org/GNOME/gvfs/-/issues/875", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-10T17:32:34.743791Z", "id": "CVE-2026-88924", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-10T17:32:41.202Z" } } ] } }