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Fencer Intel
medium 5.3

CVE-2018-10906 json

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.

published 8y ago modified 4mo ago also EUVD-2018-2962

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
1
Exploit-DB

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.

Patch / fix

  • fuse_project fuse 2.9.8, 3.2.5
  • fuse Debian 13, Debian 12 2.9.8-1
  • fuse3 Debian 14, Debian 13, Debian 12 3.2.6-1

debian advisories DEBIAN-CVE-2018-10906

  • fuse Ubuntu Pro 16.04 LTS 2.9.4-1ubuntu3.1+esm1

ubuntu advisories UBUNTU-CVE-2018-10906

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • fuse RHEL 7 2.9.2-11.el7
  • fuse-libs RHEL 7 2.9.2-11.el7

red hat advisories RHSA-2018:3324

  • fuse SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 2.8.7-0.11.3.1
  • fuse SLE Module for Basesystem 15 2.9.7-3.3.1
  • fuse SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 2.9.3-6.3.1

suse advisories SUSE-SU-2019:13948-1SUSE-SU-2018:3260-1SUSE-SU-2018:3219-1

  • fuse Alpine 3.24, Alpine 3.23, Alpine 3.22 +17 more 2.9.8-r0
  • fuse3 Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 3.2.5-r0

alpine advisories ALPINE-CVE-2018-10906

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • fuse CBL-Mariner 2.0, Azure Linux 3.0 2.9.7-10

azure linux advisories AZL-34694AZL-6430

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2018-10906 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-10906 updated cvss 5.3

fuse: bypass of the "user_allow_other" restriction when SELinux is active

  • Red Hat Virtualization 4 fuse
    affected: no fix planned “Will not fix”
  • 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, fuse-debuginfo 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, fuse-debuginfo 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-libs 2.9.2-11.el7 Red Hat Enterprise Linux Server (v. 7) fuse 2.9.2-11.el7, fuse-libs 2.9.2-11.el7
    +1 more products
    Red Hat Enterprise Linux Workstation (v. 7) fuse 2.9.2-11.el7, fuse-libs 2.9.2-11.el7
    fixed: vendor fix RHSA-2018:3324
  • Red Hat Enterprise Linux 6 fuse, fuse-libs Red Hat Enterprise Linux 8 fuse, fuse3, fuse-libs, fuse3-libs, fuse-common
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (EDB-45106)

Exploit prediction

1.41% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-45106 fusermount - user_allow_other Restriction Bypass and SELinux Label Control dos, 2018-07-30

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • [UNKNOWN] fuse

Classification

Weakness
  • CWE-285 Improper Authorization
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.