Bug 698906 - (CVE-2011-1750) CVE-2011-1750 virtio-blk: heap buffer overflow caused by unaligned requests
CVE-2011-1750 virtio-blk: heap buffer overflow caused by unaligned requests
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
public=20110330,reported=20110330,sou...
: Security
Depends On: 698909 698910 698911
Blocks:
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Reported: 2011-04-22 04:50 EDT by Petr Matousek
Modified: 2015-07-31 02:39 EDT (History)
16 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-07-29 08:40:58 EDT
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Description Petr Matousek 2011-04-22 04:50:40 EDT
It was found that virtio-blk driver in qemu-kvm did not properly validate 
read and write requests from the guest. A privileged guest user could use
this flaw to cause heap corruption, causing the guest to crash (denial of
service) or, possibly, resulting in the privileged guest user escalating
their privileges on the host.

On RHEL ExecShield (glibc heap/memory checks) mitigates this issue.

References:
http://www.spinics.net/lists/kvm/msg51877.html

Upstream commit:
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commit;h=52c050236eaa4f0b5e1d160cd66dc18106445c4d
Comment 4 Petr Matousek 2011-04-22 04:58:07 EDT
Created qemu tracking bugs for this issue

Affects: fedora-all [bug 698911]
Comment 7 errata-xmlrpc 2011-05-19 09:02:41 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0534 https://rhn.redhat.com/errata/RHSA-2011-0534.html
Comment 8 Petr Matousek 2012-03-30 13:34:17 EDT
Statement:

This issue does not affect versions of kvm package as shipped with Red Hat
Enterprise Linux 5.
Comment 9 Fedora Update System 2012-06-07 19:06:38 EDT
qemu-0.14.0-9.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.

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