[Secure-testing-team] Bug#855791: qemu: CVE-2017-2620: cirrus_bitblt_cputovideo does not check if memory region is safe

[Salvatore Bonaccorso]

Source: qemu
Version: 1:2.8+dfsg-2
Severity: grave
Tags: upstream security patch

Hi,

the following vulnerability was published for qemu.

CVE-2017-2620[0]:
display: cirrus: out-of-bounds access issue while in cirrus_bitblt_cputovideo

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-2620
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2620
[1] https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore