CVE Request: Linux kernel: arm64: unhandled el0 traps

[P J P <ppandit () redhat com>]

  Hi,

Linux kernel built for the ARM64(CONFIG_ARM64) platform is vulnerable to a 
crash when the processor generates trap/esr, that is not handled gracefully, 
which leads to bad_mode(), wherein it'll die() or oops().

A user/program could use this flaw to crash the kernel resulting in DoS.

Upstream fixes:
===============
 -> https://git.kernel.org/linus/381cc2b9705512ee7c7f1839cbdde374625a2a9f
 -> https://git.kernel.org/linus/9955ac47f4ba1c95ecb6092aeaefb40a22e99268

Thank you.
--
Prasad J Pandit / Red Hat Security Response Team
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