Description
The clone system-call implementation in the Linux kernel before 3.8.3 does not properly handle a combination of the CLONE_NEWUSER and CLONE_FS flags, which allows local users to gain privileges by calling chroot and leveraging the sharing of the / directory between a parent process and a child process.
References (6)
Core 6
Core References
Patch x_refsource_confirm
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e66eded8309ebf679d3d3c1f5820d1f2ca332c71
Mailing List mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2013/03/14/6
Vendor Advisory x_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3
Exploit x_refsource_misc
http://stealth.openwall.net/xSports/clown-newuser.c
Patch x_refsource_confirm
https://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=921448
Scores
EPSS
0.0156
EPSS Percentile
81.6%
Details
CWE
CWE-264
Status
published
Products (44)
linux/linux_kernel
3.0 rc1 (7 CPE variants)
linux/linux_kernel
3.0.1
linux/linux_kernel
3.0.2
linux/linux_kernel
3.0.3
linux/linux_kernel
3.0.4
linux/linux_kernel
3.0.5
linux/linux_kernel
3.0.6
linux/linux_kernel
3.0.7
linux/linux_kernel
3.0.8
linux/linux_kernel
3.0.9
... and 34 more
Published
Apr 05, 2013
Tracked Since
Feb 18, 2026