fuse: bypass of the "user_allow_other" restriction when SELinux is active
Published Jul 24, 2018
7.8
HIGHCVSS 3.0
EPSS 1.41%
Description
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.
Affected products
- Vendor n/a Product Fuse Defaultn/a
- Version fuse 2.9.8StatusaffectedConstraints-
- Version fuse 3.2.5StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n/a | Fuse | n/a |
|
Configuration 1
- 8.0
- 9.0
Configuration 2
- < 2.9.8
- ≥ 3.0 · < 3.2.5
Configuration 3
- 7.0
- 7.0
- 7.0
No data.
Red Hat Enterprise Linux 7
fuse-0:2.9.2-11.el7
Fixed · RHSA-2018:3324
Red Hat Enterprise Linux 6
fuse
Not affected
Red Hat Enterprise Linux 8
fuse
Not affected
Red Hat Virtualization 4
fuse
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | fuse-0:2.9.2-11.el7 | Fixed | RHSA-2018:3324 |
| Red Hat Enterprise Linux 6 | fuse | Not affected | n/a |
| Red Hat Enterprise Linux 8 | fuse | Not affected | n/a |
| Red Hat Virtualization 4 | fuse | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of fuse as shipped with Red Hat Enterprise Linux 6 as they did not consider escaped characters when checking mount options. This issue is present in fuse packages included with Red Hat Virtualization, however it is not exploitable under any supported configuration.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.41% (0.01414) | 71.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.41% (0.01414) | 69.16th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00039) | 8.79th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.13% (0.00134) | 50.28th | v3 (v2023.03.01) |
| Jul 18, 2023 | 0.13% (0.00134) | 47.70th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00113) | 43.14th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02685) | 82.26th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02685) | 80.51th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02685) | 62.15th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.61% (0.09608) | 87.22th | v1 |
| Jan 6, 2022 | 9.61% (0.09608) | 87.07th | v1 |
| Sep 1, 2021 | 9.61% (0.09608) | 94.88th | v1 |
| Apr 14, 2021 | 9.61% (0.09608) | 0.00th | v1 |
References (12)
- https://access.redhat.com/errata/RHSA-2018:3324 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-10906 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1602996 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10906 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/08/msg00015.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5XYA6PXT5PPWVK7CM7K4YRCYWA37DODB/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A253TZWZK6R7PT2S5JIEAQJR2TYKX7V2/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BREAIWIK64DRJWHIGR47L2D5YICY4HQ3/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2018-10906
- https://www.cve.org/CVERecord?id=CVE-2018-10906
- https://www.debian.org/security/2018/dsa-4257 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.exploit-db.com/exploits/45106/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
Change history (0)
No recorded changes yet.