[USN-5309-1] virglrenderer vulnerabilities
Marc Deslauriers
marc.deslauriers at canonical.com
Mon Feb 28 19:07:06 UTC 2022
==========================================================================
Ubuntu Security Notice USN-5309-1
February 28, 2022
virglrenderer vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.10
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in virglrenderer.
Software Description:
- virglrenderer: virtual GPU for KVM virtualization
Details:
It was discovered that virglrenderer incorrectly handled memory. An
attacker inside a guest could use this issue to cause virglrenderer to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2022-0135)
It was discovered that virglrenderer incorrectly initialized memory. An
attacker inside a guest could possibly use this issue to obtain sensitive
host information. (CVE-2022-0175)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 21.10:
libvirglrenderer1 0.8.2-5ubuntu0.21.10.1
Ubuntu 20.04 LTS:
libvirglrenderer1 0.8.2-1ubuntu1.1
After a standard system update you need to restart all virtual machines to
make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5309-1
CVE-2022-0135, CVE-2022-0175
Package Information:
https://launchpad.net/ubuntu/+source/virglrenderer/0.8.2-5ubuntu0.21.10.1
https://launchpad.net/ubuntu/+source/virglrenderer/0.8.2-1ubuntu1.1
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