CVE-2020-27616 QEMU: ati-vga: potential crash via invalid x y parameter values

                							

                <!--X-Body-Begin-->
<!--X-User-Header-->

oss-sec
mailing list archives
<!--X-User-Header-End-->
<!--X-TopPNI-->

By Date

By Thread

</form>

<!--X-TopPNI-End-->
<!--X-MsgBody-->
<!--X-Subject-Header-Begin-->
CVE-2020-27616 QEMU: ati-vga: potential crash via invalid x y parameter values

<!--X-Subject-Header-End-->
<!--X-Head-of-Message-->

From: P J P &lt;ppandit () redhat com&gt;

Date: Tue, 3 Nov 2020 17:27:46 +0530 (IST)

<!--X-Head-of-Message-End-->
<!--X-Head-Body-Sep-Begin-->

<!--X-Head-Body-Sep-End-->
<!--X-Body-of-Message-->
  Hello,

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:
---------------
  -&gt; https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg06080.html

This issue is reported by Gaoning Pan of Zhejiang University.

'CVE-2020-27616' assigned via -&gt; https://cveform.mitre.org/

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
8685 545E B54C 486B C6EB 271E E285 8B5A F050 DE8D

<!--X-Body-of-Message-End-->
<!--X-MsgBody-End-->
<!--X-Follow-Ups-->

<!--X-Follow-Ups-End-->
<!--X-References-->
<!--X-References-End-->
<!--X-BotPNI-->

By Date

By Thread

Current thread:

CVE-2020-27616 QEMU: ati-vga: potential crash via invalid x y parameter values P J P (Nov 03)

<!--X-BotPNI-End-->
<!--X-User-Footer-->
<!--X-User-Footer-End-->