CVE-2011-0542

Severity: low (CVSS 3.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-09-02 · updated 2026-06-16
Weakness: CWE-264

Description

fusermount in fuse 2.8.5 and earlier does not perform a chdir to / before performing a mount or umount, which allows local users to unmount arbitrary directories via unspecified vectors.

Affected products

Fuse: through 2.8.5; 1.9, 2.0-pre0, 2.0-pre1, 2.1, 2.2, 2.2.1 (+26)

References

http://fuse.git.sourceforge.net/git/gitweb.cgi?p=fuse/fuse%3Ba=commit%3Bh=1e7607ff89c65b005f69e27aeb1649d624099873
http://www.openwall.com/lists/oss-security/2011/02/02/2
http://www.openwall.com/lists/oss-security/2011/02/03/5
http://www.openwall.com/lists/oss-security/2011/02/08/4
http://fuse.git.sourceforge.net/git/gitweb.cgi?p=fuse/fuse%3Ba=commit%3Bh=1e7607ff89c65b005f69e27aeb1649d624099873
http://www.openwall.com/lists/oss-security/2011/02/02/2
http://www.openwall.com/lists/oss-security/2011/02/03/5
http://www.openwall.com/lists/oss-security/2011/02/08/4

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