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TITLE:
Linux Kernel "udp_get_next()" and "vms_set_msr()" Denial of Service

SECUNIA ADVISORY ID:
SA34478

VERIFY ADVISORY:
http://secunia.com/advisories/34478/

DESCRIPTION:
A security issue and a vulnerability have been reported in the Linux
Kernel, which can be exploited by malicious, local users to cause a
DoS (Denial of Service)

1) A security issue is caused due to an error within the
"udp_get_next()" function in net/ipv4/udp.c when trying to unlock a
not yet locked spinlock. This can be exploited to crash a system by
e.g. reading zero bytes from "/proc/net/udp/".

2) A vulnerability is caused due to the "vmx_set_msr()" function in
arch/x86/kvm/vmx.c not properly restricting access to the EFER
register, which can be exploited to e.g. crash the system.

SOLUTION:
Update to version 2.6.29.1.

PROVIDED AND/OR DISCOVERED BY:
1) Reported by the vendor.
2) Benjamin Gilbert

ORIGINAL ADVISORY:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1

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About:
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