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Bug 1140271 - (CVE-2014-7156) CVE-2014-7156 kernel: xen: Missing privilege level checks in x86 emulation of software interrupts (XSA-106)
CVE-2014-7156 kernel: xen: Missing privilege level checks in x86 emulation of...
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20140923,repor...
: Security
Depends On: 1145738
Blocks: 1140259
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Reported: 2014-09-10 11:39 EDT by Petr Matousek
Modified: 2014-09-25 05:22 EDT (History)
8 users (show)

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Doc Type: Bug Fix
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Environment:
Last Closed: 2014-09-10 11:43:09 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Petr Matousek 2014-09-10 11:39:24 EDT 
The emulation of instructions which generate software interrupts fails
to perform supervisor mode permission checks.

Malicious HVM guest user mode code may be able to crash the guest.

Acknowledgements:

Red Hat would like to thank the Xen for reporting this issue.
Comment 3 Petr Matousek 2014-09-10 11:43:09 EDT 
Statement:

Not vulnerable.

This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.
Comment 4 Petr Matousek 2014-09-23 11:22:32 EDT 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1145738]
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