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Red Hat Enterprise Linux 5 and CentOS 5 Receive an Important Kernel Update

Two security flaws have been discovered and patched in the Linux kernel 2.6.18 packages. The first one is related to the incorrect setting of an utrace flag, which caused the kernel to no longer handle the NULL pointer reference in the utrace_unsafe_exec() function, leading to a system crash. The second vulnerability is about a delay in the reset execution of a newly changed firmware.