Improper authorization in [UNKNOWN] fuse
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass, Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 7 fixed, 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-285 and CWE-269.
Summary
In fuse before versions 2.9.8 and 3.x before 3.2.5, fusermount is vulnerable to a restriction bypass when SELinux is active. This allows non-root users to mount a FUSE file system with the 'allow_other' mount option regardless of whether 'user_allow_other' is set in the fuse configuration. An attacker may use this flaw to mount a FUSE file system, accessible by other users, and trick them into accessing files on that file system, possibly causing Denial of Service or other unspecified effects.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| [UNKNOWN] | fuse | fuse 2.9.8; fuse 3.2.5 | — | No fix listed | CNA |
- fuse Vendor[UNKNOWN] Affected fuse 2.9.8; fuse 3.2.5 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:a:fuse_project:fuse:*:*:*:*:*:*:*:* | before 2.9.8; 3.0 to before 3.2.5 | Vulnerable | Fuse Project |
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:a:fuse_project:fuse:*:*:*:*:*:*:*:* Versions before 2.9.8; 3.0 to before 3.2.5 Vulnerable ·Fuse Project
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2018:3324 Released 2018-10-30 · Red Hat rating Moderatefuse security update
- Red Hat Enterprise Linux Client (v. 7) fuse-2.9.2-11.el7, fuse-libs-2.9.2-11.el7
- Red Hat Enterprise Linux Client Optional (v. 7) fuse-devel-2.9.2-11.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) fuse-2.9.2-11.el7, fuse-libs-2.9.2-11.el7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) fuse-devel-2.9.2-11.el7
- Red Hat Enterprise Linux Server (v. 7) fuse-2.9.2-11.el7, fuse-devel-2.9.2-11.el7, fuse-devel-2.9.2-11.el7.ppc +2
- Red Hat Enterprise Linux Workstation (v. 7) fuse-2.9.2-11.el7, fuse-devel-2.9.2-11.el7, fuse-libs-2.9.2-11.el7
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) fuse-2.9.2-11.el7, fuse-devel-2.9.2-11.el7, fuse-libs-2.9.2-11.el7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Virtualization 4 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:3324 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:3324 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2018:3324 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2018:3324 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:3324 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:3324 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:3324 |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2018-10906
- 2026-10-03 Alias added: GHSA-35h9-x59q-8xcf
References
Sources
- CVE-2018-10906 · CVE Program
- CVE-2018-10906 · NVD
- FIRST EPSS
- GHSA-35h9-x59q-8xcf · GitHub Advisory Database · CC BY 4.0
- CVE-2018-10906 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences