{"id":"CVE-2026-88924","summary":"Gvfs: gvfs-admin socket ownership race permits local root","details":"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.","modified":"2026-09-18T03:48:33.907595118Z","published":"2026-09-10T14:32:30.644Z","related":["openSUSE-SU-2026:11788-1"],"database_specific":{"cna_assigner":"redhat","cwe_ids":["CWE-367"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88924.json"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-88924"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88924.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88924"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531456"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/gvfs/-/issues/875"},{"type":"PACKAGE","url":"https://gitlab.gnome.org/GNOME/gvfs"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.gnome.org/gnome/gvfs","events":[{"introduced":"a971ec4b5c1ff016e7273f2d390248f8c2d65106"},{"fixed":"046d5423ef100255f554eff84388f8ba765a2182"},{"fixed":"bbf41f8a234bef8e51c012d68e78ce43fd8a6751"},{"fixed":"d871ae97ece1168701fa3e650efcdc552aea80a0"}],"database_specific":{"extracted_events":[{"introduced":"1.48.1"},{"fixed":"1.62.0"},{"fixed":"1.60.3"},{"fixed":"1.58.5"}],"source":"AFFECTED_FIELD"}}],"versions":["1.61.91","1.61.90","1.60.2","1.60.1","1.61.1","1.58.4","1.58.3","1.60.0","1.58.2","1.59.90","1.58.1","1.59.1","1.58.0","1.57.2","1.57.1","1.56.1","1.56.0","1.55.90","1.55.1","1.54.1","1.54.0","1.53.91","1.53.90","1.53.1","1.52.1","1.52.0","1.51.91","1.51.90","1.51.1","1.50.4","1.50.3","1.50.2","1.50.1","1.50.0","1.49.90","1.49.1","1.48.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88924.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}