Certain legacy functionality in fusermount in fuse 2.8.5 and earlier, when util-linux…
Priority LOW 16CWE-264Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Partial · Partial
- Fix status
- Partial Red Hat: 1 fixed, 2 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-264.
Summary
Certain legacy functionality in fusermount in fuse 2.8.5 and earlier, when util-linux does not support the --no-canonicalize option, allows local users to bypass intended access restrictions and unmount arbitrary directories via a symlink attack.
Why it matters now
EPSS 0.00329 26th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 2 without a fix
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 33
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fuse:fuse:*:*:*:*:*:*:*:* | up to 2.8.5 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:1.9:*:*:*:*:*:*:* | 1.9 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.0:pre0:*:*:*:*:*:* | 2.0 pre0 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.0:pre1:*:*:*:*:*:* | 2.0 pre1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.1:*:*:*:*:*:*:* | 2.1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.2:*:*:*:*:*:*:* | 2.2 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.2.1:*:*:*:*:*:*:* | 2.2.1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.3:pre:*:*:*:*:*:* | 2.3 pre | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.3:rc1:*:*:*:*:*:* | 2.3 rc1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.3.0:*:*:*:*:*:*:* | 2.3.0 | Vulnerable | Fuse |
- cpe:2.3:a:fuse:fuse:*:*:*:*:*:*:*:* Versions up to 2.8.5 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:1.9:*:*:*:*:*:*:* Versions 1.9 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.0:pre0:*:*:*:*:*:* Versions 2.0 pre0 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.0:pre1:*:*:*:*:*:* Versions 2.0 pre1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.2.1:*:*:*:*:*:*:* Versions 2.2.1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.3:pre:*:*:*:*:*:* Versions 2.3 pre Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.3:rc1:*:*:*:*:*:* Versions 2.3 rc1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.3.0:*:*:*:*:*:*:* Versions 2.3.0 Vulnerable ·Fuse
Show 23 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fuse:fuse:2.4.0:*:*:*:*:*:*:* | 2.4.0 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.4.1:*:*:*:*:*:*:* | 2.4.1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.4.2:*:*:*:*:*:*:* | 2.4.2 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.5.0:*:*:*:*:*:*:* | 2.5.0 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.5.1:*:*:*:*:*:*:* | 2.5.1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.5.2:*:*:*:*:*:*:* | 2.5.2 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.5.3:*:*:*:*:*:*:* | 2.5.3 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.6.0:*:*:*:*:*:*:* | 2.6.0 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.6.1:*:*:*:*:*:*:* | 2.6.1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.6.3:*:*:*:*:*:*:* | 2.6.3 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.6.5:*:*:*:*:*:*:* | 2.6.5 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.7.0:*:*:*:*:*:*:* | 2.7.0 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.7.1:*:*:*:*:*:*:* | 2.7.1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.7.2:*:*:*:*:*:*:* | 2.7.2 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.7.3:*:*:*:*:*:*:* | 2.7.3 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.7.4:*:*:*:*:*:*:* | 2.7.4 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.7.5:*:*:*:*:*:*:* | 2.7.5 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.7.6:*:*:*:*:*:*:* | 2.7.6 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.8.0:*:*:*:*:*:*:* | 2.8.0 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.8.1:*:*:*:*:*:*:* | 2.8.1 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.8.2:*:*:*:*:*:*:* | 2.8.2 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.8.3:*:*:*:*:*:*:* | 2.8.3 | Vulnerable | Fuse |
| cpe:2.3:a:fuse:fuse:2.8.4:*:*:*:*:*:*:* | 2.8.4 | Vulnerable | Fuse |
- cpe:2.3:a:fuse:fuse:2.4.0:*:*:*:*:*:*:* Versions 2.4.0 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.4.1:*:*:*:*:*:*:* Versions 2.4.1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.4.2:*:*:*:*:*:*:* Versions 2.4.2 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.5.0:*:*:*:*:*:*:* Versions 2.5.0 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.5.1:*:*:*:*:*:*:* Versions 2.5.1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.5.2:*:*:*:*:*:*:* Versions 2.5.2 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.5.3:*:*:*:*:*:*:* Versions 2.5.3 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.6.0:*:*:*:*:*:*:* Versions 2.6.0 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.6.1:*:*:*:*:*:*:* Versions 2.6.1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.6.3:*:*:*:*:*:*:* Versions 2.6.3 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.6.5:*:*:*:*:*:*:* Versions 2.6.5 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.7.0:*:*:*:*:*:*:* Versions 2.7.0 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.7.1:*:*:*:*:*:*:* Versions 2.7.1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.7.2:*:*:*:*:*:*:* Versions 2.7.2 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.7.3:*:*:*:*:*:*:* Versions 2.7.3 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.7.4:*:*:*:*:*:*:* Versions 2.7.4 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.7.5:*:*:*:*:*:*:* Versions 2.7.5 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.7.6:*:*:*:*:*:*:* Versions 2.7.6 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.8.0:*:*:*:*:*:*:* Versions 2.8.0 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.8.1:*:*:*:*:*:*:* Versions 2.8.1 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.8.2:*:*:*:*:*:*:* Versions 2.8.2 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.8.3:*:*:*:*:*:*:* Versions 2.8.3 Vulnerable ·Fuse
- cpe:2.3:a:fuse:fuse:2.8.4:*:*:*:*:*:*:* Versions 2.8.4 Vulnerable ·Fuse
Remediation
Red Hat 1 advisory
- RHSA-2011:1083 Released 2011-07-20 · Red Hat rating Moderatefuse security update
- Red Hat Enterprise Linux Server (v. 6) fuse-2.8.3-3.el6_1, fuse-devel-2.8.3-3.el6_1, fuse-devel-2.8.3-3.el6_1.ppc +2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix yet |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:1083 |
Timeline
- 2026-10-02 Threatist record created from CVE-2011-0543
- 2026-10-03 Alias added: GHSA-2g2x-4qqh-7m58
References
More Fuse vulnerabilities
- TI-2011-00468 fusermount in fuse 2.8.5 and earlier does not perform a chdir to / before performing a… CVSS 2.0LOW 3.3
- TI-2011-00467 fuse 2.8.5 and earlier does not properly handle when /etc/mtab cannot be updated, which… CVSS 2.0LOW 3.3
- TI-2010-00753 fusermount in FUSE before 2.7.5, and 2.8.x before 2.8.2, allows local users to unmount an… CVSS 2.0LOW 3.3
- TI-2005-01763 FUSE 2.x before 2.3.0 does not properly clear previously used memory from unfilled pages… CVSS 2.0LOW 2.1
Sources
- CVE-2011-0543 · CVE Program
- CVE-2011-0543 · NVD
- FIRST EPSS
- GHSA-2g2x-4qqh-7m58 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-0543 · 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