Bug 1842363 (CVE-2020-13754) - CVE-2020-13754 QEMU: msix: OOB access during mmio operations may lead to DoS
Summary: CVE-2020-13754 QEMU: msix: OOB access during mmio operations may lead to DoS
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-13754
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1842478 1842364 1842365 1842366 1842367 1842368 1842479 1910693 1921959 1921969 1944621
Blocks: 1835824
TreeView+ depends on / blocked
 
Reported: 2020-06-01 05:48 UTC by Prasad J Pandit
Modified: 2021-08-10 13:50 UTC (History)
28 users (show)

Fixed In Version: QEMU 5.0.1
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds access flaw was found in the Message Signalled Interrupt (MSI-X) device support of QEMU. This issue occurs while performing MSI-X mmio operations when a guest sent address goes beyond the mmio region. A guest user or process may use this flaw to crash the QEMU process resulting in a denial of service.
Clone Of:
Environment:
Last Closed: 2021-06-22 16:40:26 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:2521 0 None None None 2021-06-22 14:13:53 UTC
Red Hat Product Errata RHSA-2021:3061 0 None None None 2021-08-10 13:50:12 UTC

Description Prasad J Pandit 2020-06-01 05:48:53 UTC
An OOB access issue was found in the Message Signalled Interrupt (MSI-X) device support of QEMU. It could occur while performing MSI-X mmio operations when a guest sent address goes beyond the mmio region. A guest user/process may use this flaw to crash the QEMU process resulting in DoS scenario.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg03732.html

Reference:
----------
  -> https://www.openwall.com/lists/oss-security/2020/06/01/6

Comment 1 Prasad J Pandit 2020-06-01 05:49:06 UTC
Acknowledgments:

Name: Ren Ding (SSLab Georgia Tech), Hanqing Zhao (SSLab Georgia Tech), Alexander Bulekov, Anatoly Trosinenko

Comment 2 Prasad J Pandit 2020-06-01 05:49:51 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1842364]

Comment 7 Nick Tait 2021-03-02 20:10:00 UTC
Statement:

In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP qemu-kvm-rhev package.

Comment 10 errata-xmlrpc 2021-06-22 14:13:39 UTC
This issue has been addressed in the following products:

  Advanced Virtualization for RHEL 8.2.1

Via RHSA-2021:2521 https://access.redhat.com/errata/RHSA-2021:2521

Comment 11 Product Security DevOps Team 2021-06-22 16:40:26 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-13754

Comment 12 errata-xmlrpc 2021-08-10 13:50:08 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:3061 https://access.redhat.com/errata/RHSA-2021:3061


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