{"schemaVersion":3,"id":"CVE-2026-88924","aliases":["UBUNTU-CVE-2026-88924","DEBIAN-CVE-2026-88924"],"status":"published","duplicateOf":null,"title":null,"description":"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. 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