UBUNTU-CVE-2026-88924
- Source
- https://ubuntu.com/security/CVE-2026-88924
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88924.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-88924
- Upstream
- Downstream
- Related
- Published
- 2026-09-10T15:17:00Z
- Modified
- 2026-10-01T06:26:02Z
- Severity
-
- 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- 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.
- References
Affected packages
Ubuntu:22.04:LTS / gvfs
Package
- Name
- gvfs
- Purl
- pkg:deb/ubuntu/gvfs?arch=source&distro=jammy
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1.48.2-0ubuntu1.2
Affected versions
1.*
1.47.91-1ubuntu1
1.48.1-2ubuntu2
1.48.1-2ubuntu3
1.48.1-2ubuntu5
1.48.1-3
1.48.1-4
1.48.2-0ubuntu1
1.48.2-0ubuntu1.1
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gvfs",
"binary_version": "1.48.2-0ubuntu1.2"
},
{
"binary_name": "gvfs-backends",
"binary_version": "1.48.2-0ubuntu1.2"
},
{
"binary_name": "gvfs-common",
"binary_version": "1.48.2-0ubuntu1.2"
},
{
"binary_name": "gvfs-daemons",
"binary_version": "1.48.2-0ubuntu1.2"
},
{
"binary_name": "gvfs-fuse",
"binary_version": "1.48.2-0ubuntu1.2"
},
{
"binary_name": "gvfs-libs",
"binary_version": "1.48.2-0ubuntu1.2"
}
]
}
Ubuntu:24.04:LTS / gvfs
Package
- Name
- gvfs
- Purl
- pkg:deb/ubuntu/gvfs?arch=source&distro=noble
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1.54.4-0ubuntu1~24.04.4
Affected versions
1.*
1.52.0-1
1.52.1-1build1
1.52.2-1
1.53.90-2
1.54.0-1build1
1.54.0-1build2
1.54.0-1build3
1.54.0-1ubuntu2
1.54.4-0ubuntu1~24.04.1
1.54.4-0ubuntu1~24.04.2
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gvfs",
"binary_version": "1.54.4-0ubuntu1~24.04.4"
},
{
"binary_name": "gvfs-backends",
"binary_version": "1.54.4-0ubuntu1~24.04.4"
},
{
"binary_name": "gvfs-common",
"binary_version": "1.54.4-0ubuntu1~24.04.4"
},
{
"binary_name": "gvfs-daemons",
"binary_version": "1.54.4-0ubuntu1~24.04.4"
},
{
"binary_name": "gvfs-fuse",
"binary_version": "1.54.4-0ubuntu1~24.04.4"
},
{
"binary_name": "gvfs-libs",
"binary_version": "1.54.4-0ubuntu1~24.04.4"
}
]
}
Ubuntu:26.04:LTS / gvfs
Package
- Name
- gvfs
- Purl
- pkg:deb/ubuntu/gvfs?arch=source&distro=resolute
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1.60.0-1ubuntu0.1
Affected versions
1.*
1.57.2-2ubuntu5
1.57.2-2ubuntu6
1.58.0-1ubuntu1
1.58.0-2
1.59.1-1
1.59.90-3
1.60.0-1
Ecosystem specific
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "gvfs",
"binary_version": "1.60.0-1ubuntu0.1"
},
{
"binary_name": "gvfs-backends",
"binary_version": "1.60.0-1ubuntu0.1"
},
{
"binary_name": "gvfs-common",
"binary_version": "1.60.0-1ubuntu0.1"
},
{
"binary_name": "gvfs-daemons",
"binary_version": "1.60.0-1ubuntu0.1"
},
{
"binary_name": "gvfs-fuse",
"binary_version": "1.60.0-1ubuntu0.1"
},
{
"binary_name": "gvfs-libs",
"binary_version": "1.60.0-1ubuntu0.1"
}
]
}