Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.
First Last Prev Next    This bug is not in your last search results.
Bug 1144897 - (CVE-2014-3647) CVE-2014-3647 kernel: kvm: noncanonical rip after emulation
CVE-2014-3647 kernel: kvm: noncanonical rip after emulation
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20141021,repor...
: Reopened, Security
Depends On: 1152993 1152994 1152995 1152996 1152997
Blocks: 1144830
  Show dependency tree / graph
 
Reported: 2014-09-21 18:32 EDT by Petr Matousek
Modified: 2018-08-28 17:55 EDT (History)
20 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A flaw was found in the way the Linux kernel's KVM subsystem handled non-canonical addresses when emulating instructions that change the RIP (for example, branches or calls). A guest user with access to an I/O or MMIO region could use this flaw to crash the guest.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2015-04-22 07:05:57 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:2152 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2015-11-19 19:56:02 EST

  None (edit)
Description Petr Matousek 2014-09-21 18:32:53 EDT 
kvm currently mishandles noncanonical addresses when emulating instructions
that change rip (eg branches, calls), potentially causing a failed VM-entry.

A guest user with access to I/O or MMIO region can use this flaw to crash the
guest.

Acknowledgements:

Red Hat would like to thank Nadav Amit for reporting this issue.
Comment 4 Petr Matousek 2014-10-15 06:52:56 EDT 
Statement:

This issue does affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7. Future kernel updates may address this issue.

This issue does affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6. The risks associated with fixing this bug are greater than its security impact. This issue is not currently planned to be addressed in future kernel updates for Red Hat Enterprise Linux 6.

This issue does affect the kvm packages as shipped with Red Hat Enterprise Linux 5.

Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Comment 6 errata-xmlrpc 2015-11-19 15:20:26 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2152 https://rhn.redhat.com/errata/RHSA-2015-2152.html
Comment 7 errata-xmlrpc 2015-11-19 18:23:09 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2152 https://rhn.redhat.com/errata/RHSA-2015-2152.html
Note You need to log in before you can comment on or make changes to this bug.
First Last Prev Next    This bug is not in your last search results.