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Bug 1448438 - (CVE-2017-7995) CVE-2017-7995 xen: Checks access permissions to MMIO ranges only after accessing them
CVE-2017-7995 xen: Checks access permissions to MMIO ranges only after access...
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20170413,reported=2...
: Security
Depends On:
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Reported: 2017-05-05 08:20 EDT by Andrej Nemec
Modified: 2017-05-05 08:21 EDT (History)
12 users (show)

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Last Closed: 2017-05-05 08:21:34 EDT
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Description Andrej Nemec 2017-05-05 08:20:54 EDT 
Xen PV guest before Xen 4.3 checked access permissions to MMIO ranges
only after accessing them, allowing host PCI device space memory reads,
leading to information disclosure. This is an error in the get_user
function. NOTE: the upstream Xen Project considers versions before
4.5.x to be EOL.

References:

https://bugzilla.suse.com/show_bug.cgi?id=1033948
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