CVE-2018-7858

Description

Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.11%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory nongnu.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2018:2162 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1553402 issue tracking third party advisory
https://access.redhat.com/errata/RHSA-2018:1369 third party advisory vendor advisory
https://usn.ubuntu.com/3649-1/ third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:1416 third party advisory vendor advisory
http://www.securityfocus.com/bid/103350 vdb entry third party advisory
http://www.openwall.com/lists/oss-security/2018/03/09/1 mailing list third party advisory patch
https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html mailing list patch vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html mailing list release notes third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-7858?
CVE-2018-7858 has been scored as a medium severity vulnerability.
How to fix CVE-2018-7858?
To fix CVE-2018-7858, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7858 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-7858 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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