USN-5309-1: virglrenderer vulnerabilities

Releases

• Ubuntu 21.10
• Ubuntu 20.04 LTS

Packages

• 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

• 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

• CVE-2022-0175
• CVE-2022-0135