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CVE-2013-1956

Published: Apr 24, 2013

Modified: Aug 6, 2024

PUBLISHED

Description

The 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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d

x_refsource_CONFIRM

https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d

x_refsource_CONFIRM

[oss-security] 20130416 Re: Re: Summary of security bugs (now fixed) in user namespaces

mailing-list

x_refsource_MLIST

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6

x_refsource_CONFIRM

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