# CVE-2022-0175: libvirglrenderer1: A flaw was found in the VirGL virtual OpenGL renderer (virglrenderer)

CVE-2022-0175 is fixed in 2 products on 1 platform, first by libvirglrenderer1 0.8.2-1ubuntu1.1, released January 31, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-0175
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0032
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 31, 2022

## Description

A flaw was found in the VirGL virtual OpenGL renderer (virglrenderer). Thevirgl did not properly initialize memory when allocating a host-backedmemory resource. A malicious guest could use this flaw to mmap from theguest kernel and read this uninitialized memory from the host, possiblyleading to information disclosure.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libvirglrenderer1 Ubuntu 20.04 LTS (focal) | 0.8.2-1ubuntu1.1 | [libvirglrenderer1 0.8.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libvirglrenderer1-0.8.2-1ubuntu1.1.md) | Jan 31, 2022 |
| Linux | libvirglrenderer1 Ubuntu 22.04.1 LTS (jammy) | 0.9.1-1~exp1ubuntu2 | [libvirglrenderer1 0.9.1-1~exp1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libvirglrenderer1-0.9.1-1-exp1ubuntu2.md) | Jan 31, 2022 |
| Linux | libvirglrenderer1 Ubuntu 24.10 (oracular) | 0.9.1-1~exp1ubuntu2 | [libvirglrenderer1 0.9.1-1~exp1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libvirglrenderer1-0.9.1-1-exp1ubuntu2.md) | Jan 16, 2026 |
| Linux | libvirglrenderer1 Ubuntu 25.04 (plucky) | 0.9.1-1~exp1ubuntu2 | [libvirglrenderer1 0.9.1-1~exp1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libvirglrenderer1-0.9.1-1-exp1ubuntu2.md) | Jan 16, 2026 |
| Linux | virgl-server Ubuntu 20.04 LTS (focal) | 0.8.2-1ubuntu1.1 | [virgl-server 0.8.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-virgl-server-0.8.2-1ubuntu1.1.md) | Jan 31, 2022 |
| Linux | virgl-server Ubuntu 22.04.1 LTS (jammy) | 0.9.1-1~exp1ubuntu2 | [virgl-server 0.9.1-1~exp1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-virgl-server-0.9.1-1-exp1ubuntu2.md) | Jan 31, 2022 |
| Linux | virgl-server Ubuntu 24.10 (oracular) | 0.9.1-1~exp1ubuntu2 | [virgl-server 0.9.1-1~exp1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-virgl-server-0.9.1-1-exp1ubuntu2.md) | Jan 16, 2026 |
| Linux | virgl-server Ubuntu 25.04 (plucky) | 0.9.1-1~exp1ubuntu2 | [virgl-server 0.9.1-1~exp1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-virgl-server-0.9.1-1-exp1ubuntu2.md) | Jan 16, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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