CVE-2020-11869 qemu: integer overflow in ati_2d_blt() in hw/display/ati-2d.c could lead to DoS

[Mauro Matteo Cascella <mcascell () redhat com>]

Hello all,

An integer overflow flaw was found in QEMU in the way it implemented the
ATI VGA
emulation. This flaw occurs in the ati_2d_blt() routine while handling MMIO
write
operations through ati_mm_write() callback. A malicious guest could abuse
this
flaw to crash the QEMU process, resulting in a denial of service.

Upstream patch:
   ->
https://git.qemu.org/?p=qemu.git;a=commit;h=ac2071c3791b67fc7af78b8ceb320c01ca1b5df7

This issue was reported by Ziming Zhang.
CVE-2020-11869 requested via -> https://cveform.mitre.org/

Thank you,

-- 

Mauro Matteo Cascella

Product Security Engineer

Red Hat <https://www.redhat.com/>
<https://www.redhat.com/>