CVE-2013-1956

NameCVE-2013-1956
DescriptionThe create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitylow (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie3.16.56-1+deb8u1fixed
jessie (security)3.16.59-1fixed
stretch4.9.130-2fixed
stretch (security)4.9.110-3+deb9u6fixed
buster4.19.12-1fixed
sid4.19.16-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)3.8.11-1low
linuxsourcewheezy(not affected)
linux-2.6source(unstable)(not affected)

Notes

[wheezy] - linux <not-affected> (Not exploitable by unprivileged users)
- linux-2.6 <not-affected> (Not exploitable by unprivileged users)

Search for package or bug name: Reporting problems