fuse: unprivileged user can unmount arbitrary locations via symlink attack
Published Jan 22, 2011
5.8
MEDIUMCVSS 2.0
EPSS 9.85%
Description
FUSE, possibly 2.8.5 and earlier, allows local users to create mtab entries with arbitrary pathnames, and consequently unmount any filesystem, via a symlink attack on the parent directory of the mountpoint of a FUSE filesystem, a different vulnerability than CVE-2010-0789.
Affected products
No data.
- ≤ 2.8.5
No data.
Red Hat Enterprise Linux 6
fuse-0:2.8.3-3.el6_1
Fixed · RHSA-2011:1083
Red Hat Enterprise Linux 5
fuse
Will not fix
Red Hat Enterprise Linux 5
util-linux
Will not fix
Red Hat Enterprise Linux 6
util-linux-ng
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | fuse-0:2.8.3-3.el6_1 | Fixed | RHSA-2011:1083 |
| Red Hat Enterprise Linux 5 | fuse | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | util-linux | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | util-linux-ng | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
The Red Hat Security Response Team has rated this issue as having low security impact. On Red Hat Enterprise Linux 5 and 6, a user must be a member of the 'fuse' group in order to use FUSE. Due to the risks associated with fixing this bug on Red Hat Enterprise Linux 5, and because of the group restrictions in place, we currently have no plans to fix this flaw in Red Hat Enterprise Linux 5.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 9.85% (0.09848) | 95.43th | v5 (v2026.06.15) |
| Jun 15, 2026 | 9.85% (0.09848) | 94.93th | v5 (v2026.06.15) |
| Apr 12, 2026 | 2.68% (0.02680) | 85.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.48% (0.01480) | 79.66th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00067) | 31.48th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00069) | 27.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.70% (0.03702) | 85.07th | v2 (v2022.01.01) |
| Feb 13, 2023 | 3.70% (0.03702) | 84.66th | v2 (v2022.01.01) |
| Feb 3, 2023 | 5.36% (0.05356) | 89.61th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.70% (0.03702) | 83.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.70% (0.03702) | 66.69th | v2 (v2022.01.01) |
References (23)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=602333 x_refsource_CONFIRMExploitPatchThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053792.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.grok.org.uk/pipermail/full-disclosure/2010-November/077247.html mailing-listx_refsource_FULLDISCExploitThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://openwall.com/lists/oss-security/2010/11/04/8 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- http://openwall.com/lists/oss-security/2010/11/05/2 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- http://osvdb.org/70520 vdb-entryx_refsource_OSVDBBroken Link
- http://secunia.com/advisories/42961 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/42965 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://www.halfdog.net/Security/FuseTimerace/ x_refsource_MISCExploitPatchThird Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:155 vendor-advisoryx_refsource_MANDRIVAThird Party Advisory
- http://www.securityfocus.com/bid/44623 vdb-entryx_refsource_BIDExploitThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-1045-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-1045-2 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.vupen.com/english/advisories/2011/0181 vdb-entryx_refsource_VUPENPermissions Required
- http://www.vupen.com/english/advisories/2011/0302 vdb-entryx_refsource_VUPENPermissions Required
- https://access.redhat.com/security/cve/CVE-2010-3879 Vendor Advisory
- https://bugs.launchpad.net/bugs/670622 x_refsource_CONFIRMExploitThird Party Advisory
- https://bugzilla.novell.com/show_bug.cgi?id=651598 x_refsource_CONFIRMExploitIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=651183 x_refsource_CONFIRMExploitIssue TrackingPatch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/62986 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2010-3879
- https://www.cve.org/CVERecord?id=CVE-2010-3879
Change history (0)
No recorded changes yet.