{"id":"CVE-2026-88924","aliases":["ALSA-2026:73998","ALSA-2026:74370","CLSA-2026-1792166468","CLSA-2026-1792212029","DEBIAN-CVE-2026-88924","EUVD-2026-75537","GHSA-8w8m-36rw-gg63","RHSA-2026:73998","RHSA-2026:74370","RLSA-2026:73998","RLSA-2026:74370","SUSE-SU-2026:24466-1","SUSE-SU-2026:5065-1","SUSE-SU-2026:5080-1","UBUNTU-CVE-2026-88924","USN-8845-1","openSUSE-SU-2026:11788-1","openSUSE-SU-2026:22174-1"],"status":"published","title":"Gvfs: gvfs-admin socket ownership race permits local root","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. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00223,"percentile":0.12996,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-367"],"published":"2026-09-10T14:32:30Z","modified":"2026-11-11T18:26:19Z","fixes":[{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs-client","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs-devel","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs-fuse","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs-goa","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs-gphoto2","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs-mtp","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs-smb","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.6","package":"gvfs-tests","fixed_in":["1.48.1-6.el9_6.tuxcare.els1"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs-client","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs-devel","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs-fuse","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs-goa","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs-gphoto2","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs-mtp","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs-smb","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"gvfs-tests","fixed_in":["1.48.1-4.el9_2.tuxcare.els2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"gvfs","fixed_in":["1.62.0-1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux 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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.","status":"published","published":"2026-09-10T14:32:30.644Z","modified":"2026-11-11T18:26:19.179Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-11T19:31:50.381593Z"}],"euvd":[{"id":"EUVD-2026-75537","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. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.","status":"published","published":"2026-09-10T14:32:30Z","modified":"2026-11-11T18:26:19Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-11T19:30:03.578461Z"}],"ghsa":[{"id":"GHSA-8w8m-36rw-gg63","title":"A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the...","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. 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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.","status":"published","published":"2026-09-10T14:32:30.644Z","modified":"2026-11-05T21:16:23.793214266Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-367"],"updated_at":"2026-11-05T22:00:58.054534Z"},{"id":"DEBIAN-CVE-2026-88924","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. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.","status":"published","published":"2026-09-10T15:17:59.253Z","modified":"2026-11-05T09:47:39.639119981Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-05T13:31:24.64316Z"},{"id":"RHSA-2026:73998","title":"Red Hat Security Advisory: gvfs security update","status":"published","published":"2026-10-01T10:21:13Z","modified":"2026-10-20T10:15:24Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"RHSA-2026:74370","title":"Red Hat Security Advisory: gvfs security update","status":"published","published":"2026-10-02T10:25:50Z","modified":"2026-10-20T10:15:32Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"RLSA-2026:73998","title":"Important: gvfs security update","description":"GVFS is the GNOME Desktop Virtual File System layer that allows users to easily access local and remote data using File Transfer Protocol (FTP), Secure Shell File Transfer Protocol (SFTP), Web Distributed Authoring and Versioning (WebDAV), Common Internet File System (CIFS), Server Message Block (SMB), and other protocols. GVFS integrates with the GNOME I/O (GIO) abstraction layer.\n\nSecurity Fix(es):\n\n* gvfs: SFTP: heap-based buffer overflow in read_reply() (CVE-2026-84268)\n\n* gvfs: gvfs-admin socket ownership race permits local root (CVE-2026-88924)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-10-01T12:08:49.381512Z","modified":"2026-10-01T12:30:04.470066543Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.449929Z"},{"id":"RLSA-2026:74370","title":"Important: gvfs security update","description":"GVFS is the GNOME Desktop Virtual File System layer that allows users to easily access local and remote data using File Transfer Protocol (FTP), Secure Shell File Transfer Protocol (SFTP), Web Distributed Authoring and Versioning (WebDAV), Common Internet File System (CIFS), Server Message Block (SMB), and other protocols. GVFS integrates with the GNOME I/O (GIO) abstraction layer.\n\nSecurity Fix(es):\n\n* gvfs: SFTP: heap-based buffer overflow in read_reply() (CVE-2026-84268)\n\n* gvfs: gvfs-admin socket ownership race permits local root (CVE-2026-88924)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-10-02T06:07:33.442229Z","modified":"2026-10-02T06:30:02.472387608Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.449929Z"},{"id":"UBUNTU-CVE-2026-88924","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. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.","status":"published","published":"2026-09-10T15:17:00Z","modified":"2026-10-01T06:23:51.482096329Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:57:24.828975Z"},{"id":"ALSA-2026:73998","title":"Important: gvfs security update","description":"GVFS is the GNOME Desktop Virtual File System layer that allows users to easily access local and remote data using File Transfer Protocol (FTP), Secure Shell File Transfer Protocol (SFTP), Web Distributed Authoring and Versioning (WebDAV), Common Internet File System (CIFS), Server Message Block (SMB), and other protocols. GVFS integrates with the GNOME I/O (GIO) abstraction layer.  \n\nSecurity Fix(es):  \n\n  * gvfs: SFTP: heap-based buffer overflow in read_reply() (CVE-2026-84268)\n  * gvfs: gvfs-admin socket ownership race permits local root (CVE-2026-88924)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-09-30T00:00:00Z","modified":"2026-10-29T11:30:51.634068027Z","updated_at":"2026-11-02T15:27:55.200553Z"},{"id":"ALSA-2026:74370","title":"Important: gvfs security update","description":"GVFS is the GNOME Desktop Virtual File System layer that allows users to easily access local and remote data using File Transfer Protocol (FTP), Secure Shell File Transfer Protocol (SFTP), Web Distributed Authoring and Versioning (WebDAV), Common Internet File System (CIFS), Server Message Block (SMB), and other protocols. GVFS integrates with the GNOME I/O (GIO) abstraction layer.  \n\nSecurity Fix(es):  \n\n  * gvfs: SFTP: heap-based buffer overflow in read_reply() (CVE-2026-84268)\n  * gvfs: gvfs-admin socket ownership race permits local root (CVE-2026-88924)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-10-01T00:00:00Z","modified":"2026-10-29T11:32:37.853756295Z","updated_at":"2026-11-02T15:27:55.200553Z"},{"id":"CLSA-2026-1792166468","title":"gvfs: Fix of CVE-2026-88924","description":"- Fix CVE-2026-88924: gvfsd-admin changed the ownership of its D-Bus\n  socket with a link-following chown() after creating it in a\n  user-controlled directory, allowing a local user to take ownership of\n  arbitrary root-owned files; set the filesystem UID before creating the\n  socket instead (upstream 371909dd)","status":"published","published":"2026-10-16T16:01:18Z","modified":"2026-10-26T09:31:19.198890325Z","updated_at":"2026-11-02T15:43:51.747192Z"},{"id":"CLSA-2026-1792212029","title":"gvfs: Fix of CVE-2026-88924","description":"- CVE-2026-88924: gvfsd-admin changed the ownership of its D-Bus\n  socket with a link-following chown() after creating it in a\n  user-controlled directory, allowing a local user to take ownership of\n  arbitrary root-owned files; set the filesystem UID before creating the\n  socket instead (upstream 371909dd)","status":"published","published":"2026-10-17T04:40:41Z","modified":"2026-10-26T09:30:59.161886383Z","updated_at":"2026-11-02T15:43:52.011757Z"},{"id":"openSUSE-SU-2026:11788-1","title":"gvfs-1.60.3-1.1 on GA media","description":"These are all security issues fixed in the gvfs-1.60.3-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-09-15T00:00:00Z","modified":"2026-09-16T18:23:08.542027013Z","updated_at":"2026-11-02T16:58:39.516824Z"},{"id":"openSUSE-SU-2026:22174-1","title":"Security update for gvfs","description":"This update for gvfs fixes the following issue:\n\n- CVE-2026-88924: `gvfs-admin` socket ownership race condition allows local users to change the ownership of root-owned\n  files and achieve local privilege escalation (bsc#1280058).\n","status":"published","published":"2026-10-27T13:53:20Z","modified":"2026-11-01T17:23:28.51109237Z","updated_at":"2026-11-02T16:58:42.426393Z"},{"id":"SUSE-SU-2026:24466-1","title":"Security update for gvfs","description":"This update for gvfs fixes the following issue:\n\n- CVE-2026-88924: `gvfs-admin` socket ownership race condition allows local users to change the ownership of root-owned\n  files and achieve local privilege escalation (bsc#1280058).\n","status":"published","published":"2026-10-27T13:53:36Z","modified":"2026-11-04T17:23:17.641341519Z","updated_at":"2026-11-04T17:43:22.558805Z"},{"id":"SUSE-SU-2026:5065-1","title":"Security update for gvfs","description":"This update for gvfs fixes the following issue:\n\n- CVE-2026-88924: `gvfs-admin` socket ownership race condition allows local users to change the ownership of root-owned\n  files and achieve local privilege escalation (bsc#1280058).\n","status":"published","published":"2026-11-03T07:33:10Z","modified":"2026-11-03T22:45:05.207982573Z","updated_at":"2026-11-03T22:59:30.419462Z"},{"id":"SUSE-SU-2026:5080-1","title":"Security update for gvfs","description":"This update for gvfs fixes the following issue:\n\n- CVE-2026-88924: `gvfs-admin` socket ownership race condition allows local users to change the ownership of root-owned\n  files and achieve local privilege escalation (bsc#1280058).\n","status":"published","published":"2026-11-03T08:23:57Z","modified":"2026-11-03T22:45:05.215829391Z","updated_at":"2026-11-03T22:59:30.419462Z"},{"id":"USN-8845-1","title":"gvfs vulnerabilities","description":"Keith Linneman discovered that GVfs did not properly validate data\nreceived from SFTP servers. An attacker could possibly use this issue to\ncause a heap buffer overflow, resulting in arbitrary code execution or a\ndenial of service. (CVE-2026-84268)\n\nIt was discovered that GVfs incorrectly handled file ownership when\ncreating private D-Bus sockets in the admin backend. A local attacker\ncould possibly use this issue to change the ownership of arbitrary\nsystem files, resulting in privilege escalation to root. This issue only\naffected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-88924)","status":"published","published":"2026-09-30T15:54:56Z","modified":"2026-10-01T06:27:36.42757955Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}