CVE-2013-1958

The scm_check_creds function in net/core/scm.c in the Linux kernel before 3.8.6 does not properly enforce capability requirements for controlling the PID value associated with a UNIX domain socket, which allows local users to bypass intended access restrictions by leveraging the time interval during which a user namespace has been created but a PID namespace has not been created.

Affected Software

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=92f28d973cce45ef5823209aab3138eb45d8b349
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6
• http://www.openwall.com/lists/oss-security/2013/04/16/11
• https://github.com/torvalds/linux/commit/92f28d973cce45ef5823209aab3138eb45d8b349
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=92f28d973cce45ef5823209aab3138eb45d8b349
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6
• http://www.openwall.com/lists/oss-security/2013/04/16/11
• https://github.com/torvalds/linux/commit/92f28d973cce45ef5823209aab3138eb45d8b349