[USN-5309-1] virglrenderer vulnerabilities

========================================================================== 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
Several security issues were fixed in virglrenderer.
Software Description: – virglrenderer: virtual GPU for KVM virtualization
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: ubuntu.com/security/notices/USN-5309-1 CVE-2022-0135, CVE-2022-0175
Package Information: launchpad.net/ubuntu/+source/virglrenderer/0.8.2-5ubuntu0.21.10.1 launchpad.net/ubuntu/+source/virglrenderer/0.8.2-1ubuntu1.1