Bug 996380 - (CVE-2013-4220) CVE-2013-4220 Kernel: arm64: unhandled esr by el0_sync_compat
CVE-2013-4220 Kernel: arm64: unhandled esr by el0_sync_compat
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 996383
Blocks: 979016
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Reported: 2013-08-13 01:39 EDT by Prasad J Pandit
Modified: 2015-07-31 03:09 EDT (History)
29 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2014-06-10 01:21:12 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Prasad J Pandit 2013-08-13 01:39:02 EDT
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

  -> http://www.openwall.com/lists/oss-security/2013/08/08/12
Comment 1 Prasad J Pandit 2013-08-13 01:43:44 EDT

Not vulnerable.

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG 2.
Comment 2 Prasad J Pandit 2013-08-13 01:45:37 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 996383]

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