Bug 1471638 - (CVE-2017-11334) CVE-2017-11334 Qemu: exec: oob access during dma operation
CVE-2017-11334 Qemu: exec: oob access during dma operation
Status: NEW
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=20170713,repor...
: Security
Depends On: 1471639 1471640 1471641 1471644 1471645 1471646 1471647 1471648 1472185 1474625 1471642 1471643
Blocks: 1470243
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Reported: 2017-07-17 03:18 EDT by Prasad J Pandit
Modified: 2017-08-23 03:07 EDT (History)
41 users (show)

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Doc Text:
Quick Emulator (QEMU) built with the qemu_map_ram_ptr' to access guests' RAM block area is vulnerable to a OOB r/w access issue is vulnerable to a crash via a DMA operation. The crash can occur if a privileged user inside a guest conducts certain DMA operations, resulting in a DoS.
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Description Prasad J Pandit 2017-07-17 03:18:14 EDT
Qemu emulator built to use 'qemu_map_ram_ptr' to access guests' ram block area
is vulnerable to a OOB r/w access issue. It could occur during a DMA operation.

A privileged user inside guest could use this flaw to crash the guest instance
resulting in DoS.

Upstream patch:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg03775.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/07/17/4
Comment 1 Prasad J Pandit 2017-07-17 03:18:47 EDT
Acknowledgments:

Name: Alex
Comment 2 Prasad J Pandit 2017-07-17 03:20:29 EDT
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1471640]
Comment 3 Prasad J Pandit 2017-07-17 03:20:48 EDT
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1471639]

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