oss-security - CVE Request: Linux kernel: arm64: unhandled el0 traps

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Date: Thu, 8 Aug 2013 15:39:30 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Petr Matousek <pmatouse@...hat.com>
Subject: CVE Request: Linux kernel: arm64: unhandled el0 traps

   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
DB7A 84C5 D3F9 7CD1 B5EB  C939 D048 7860 3655 602B

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