Description
A flaw was found in the VirGL virtual OpenGL renderer (virglrenderer). The virgl did not properly initialize memory when allocating a host-backed memory resource. A malicious guest could use this flaw to mmap from the guest kernel and read this uninitialized memory from the host, possibly leading to information disclosure.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | virglrenderer | Affects v0.9.0 and later. | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | virglrenderer | 0.9.1-1~exp1ubuntu2 | — |
| Ubuntu 20.04 LTS | virglrenderer | 0.8.2-1ubuntu1.1 | USN-5309-1 |
| Ubuntu 18.04 LTS | virglrenderer | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | virglrenderer | 0.6.0-4.6.1 | SUSE-SU-2022:0111-1 |
| SLES 12 SP5 | virglrenderer | 0.5.0-12.6.1 | SUSE-SU-2022:0110-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | virglrenderer | 0.5.0-12.6.1 | SUSE-SU-2022:0110-1 |
| SLE Micro 5.0 | virglrenderer | 0.6.0-4.6.1 | SUSE-SU-2022:0111-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | virglrenderer | 0.6.0-4.6.1 | openSUSE-SU-2022:0111-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | virglrenderer | 0.10.3-r0 | — |
| Alpine v3.23 | virglrenderer | 0.10.3-r0 | — |
| Alpine v3.22 | virglrenderer | 0.10.3-r0 | — |
| Alpine v3.21 | virglrenderer | 0.10.3-r0 | — |
| Alpine v3.20 | virglrenderer | 0.10.3-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | virglrenderer | 0.10.3-r0 | — |
| Alpine v3.18 | virglrenderer | 0.10.3-r0 | — |
| Alpine v3.17 | virglrenderer | 0.10.3-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | virglrenderer | 0.9.1-3 | — |
| Azure Linux 2 (CBL-Mariner) | virglrenderer | 0.9.1-3 | — |
Advisories 4
- USN-5309-1 virglrenderer vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2022:0111-1 Security update for virglrenderer SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0110-1 Security update for virglrenderer SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0111-1 Security update for virglrenderer SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/654
- https://gitlab.freedesktop.org/virgl/virglrenderer/-/commit/b05bb61f454eeb8a85164c8a31510aeb9d79129c
- https://bugzilla.redhat.com/show_bug.cgi?id=2039003
- https://security-tracker.debian.org/tracker/CVE-2022-0175
- https://access.redhat.com/security/cve/CVE-2022-0175
- GLSA-202210-05 vendor-advisory