Bug 1894036 (CVE-2020-27616) - CVE-2020-27616 QEMU: ati-vga: potential crash via invalid x y parameter values
Summary: CVE-2020-27616 QEMU: ati-vga: potential crash via invalid x y parameter values
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-27616
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1894037 1910664
Blocks: 1880559
TreeView+ depends on / blocked
 
Reported: 2020-11-03 11:53 UTC by Prasad J Pandit
Modified: 2022-04-17 21:03 UTC (History)
25 users (show)

Fixed In Version: QEMU 5.2.0
Doc Type: ---
Doc Text:
An out-of-bounds access flaw was found in the ati-vga emulator of the QEMU. This flaw occurs when the source and destination x y display parameters in ati_2d_blt() have invalid values. This flaw allows a guest user or process to crash the QEMU process, resulting in a denial of service.
Clone Of:
Environment:
Last Closed: 2020-11-03 14:21:16 UTC


Attachments (Terms of Use)

Description Prasad J Pandit 2020-11-03 11:53:15 UTC
An out-of-bounds access issue was found in the ati-vga emulator of the QEMU. It could occur when the source and destination x,y display parameters in ati_2d_blt() have invalid values. A guest user/process may use this flaw to crash the QEMU process resulting in DoS scenario.

Upstream patch:
---------------
  -> https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg06080.html

Comment 1 Prasad J Pandit 2020-11-03 11:53:25 UTC
Acknowledgments:

Name: Gaoning Pan (Zhejiang University)

Comment 2 Prasad J Pandit 2020-11-03 11:54:28 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1894037]

Comment 3 Prasad J Pandit 2020-11-03 12:09:39 UTC
External References:

https://www.openwall.com/lists/oss-security/2020/11/03/2

Comment 4 Product Security DevOps Team 2020-11-03 14:21:16 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-2020-27616


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