CVE-2011-1833

NameCVE-2011-1833
DescriptionRace condition in the ecryptfs_mount function in fs/ecryptfs/main.c in the eCryptfs subsystem in the Linux kernel before 3.1 allows local users to bypass intended file permissions via a mount.ecryptfs_private mount with a mismatched uid.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
ReferencesDSA-2443-1
NVD severitylow (attack range: local)
Debian/oldoldstablepackage ecryptfs-utils is vulnerable.
Debian/oldstablenot vulnerable.
Debian/stablenot vulnerable.
Debian/testingnot vulnerable.
Debian/unstablenot vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ecryptfs-utils (PTS)squeeze, squeeze (security)83-4+squeeze1vulnerable
wheezy99-1fixed
jessie103-5fixed
stretch, sid106-1fixed
linux-2.6 (PTS)squeeze, squeeze (security)2.6.32-48squeeze6fixed
squeeze (lts)2.6.32-48squeeze13fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ecryptfs-utilssource(unstable)92-1low
linux-2.6source(unstable)3.1.1-1low
linux-2.6sourcesqueeze2.6.32-41squeeze2lowDSA-2443-1

Notes

[squeeze] - ecryptfs-utils <no-dsa> (Minor issue)
cannot be fixed in ecryptfs-utils (squeeze, lenny) until kernel fix is in place

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