Information disclosure in Linux kernel - CVE-2013-3236

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The vmci_transport_dgram_dequeue function in net/vmw_vsock/vmci_transport.c in the Linux kernel before 3.9-rc7 does not properly initialize a certain length variable, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.

How to mitigate CVE-2013-3236

Sources

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=680d04e0ba7e926233e3b9cee59125ce181f66ba
• http://www.openwall.com/lists/oss-security/2013/04/14/3
• https://github.com/torvalds/linux/commit/680d04e0ba7e926233e3b9cee59125ce181f66ba
• https://lkml.org/lkml/2013/4/14/107