Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | fuse | 2.8.5-1 | — |
| Debian 12 | fuse | 2.8.5-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | fuse +2 | 2.8.3-3.el6_1 | RHSA-2011:1083 |
Advisories 1
- RHSA-2011:1083 Red Hat Security Advisory: fuse security update Red Hat Security Advisories (RHSA) · Jan 14, 2026
References
- [oss-security] 20110201 CVE request: fuse mailing-list
- SUSE-SR:2011:005 vendor-advisory
- [oss-security] 20110203 Re: CVE request: fuse mailing-list
- http://fuse.git.sourceforge.net/git/gitweb.cgi?p=fuse/fuse%3Ba=commit%3Bh=cbd3a2a84068aae6e3fe32939d88470d712dbf47
- [oss-security] 20110208 Re: CVE request: fuse mailing-list