virglrenderer: memory initialization issue in vrend_resource_alloc_buffer() can lead to info leak
Published Aug 26, 2022
6.5
MEDIUMCVSS 3.1
EPSS 0.32%
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 n/a Product Virglrenderer Defaultn/a
- Version Affects v0.9.0 and later.StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Virglrenderer | n/a |
|
Configuration 1
- 0.9.0
- 0.9.1
Configuration 2
- 8.0
No data.
Red Hat Enterprise Linux 8 Advanced Virtualization
virt:8.2/virglrenderer
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 Advanced Virtualization | virt:8.2/virglrenderer | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This flaw does not affect Red Hat Enterprise Linux as `virglrenderer` is not shipped in RHEL. Support for VirGL was enabled as a Technology Preview in Red Hat Enterprise Linux Advanced Virtualization 8.2 and later disabled in Red Hat Enterprise Linux Advanced Virtualization 8.3. For more information on the Technology Preview support scope, please refer to https://access.redhat.com/support/offerings/techpreview.
Red Hat mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.32% (0.00324) | 23.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.31% (0.00311) | 22.58th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.02% (0.00024) | 3.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00046) | 19.08th | v3 (v2023.03.01) |
| May 4, 2024 | 0.05% (0.00046) | 16.02th | v3 (v2023.03.01) |
| Dec 1, 2023 | 0.05% (0.00046) | 14.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.31th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Oct 17, 2022 | 1.03% (0.01034) | 40.24th | v2 (v2022.01.01) |
| Aug 27, 2022 | 0.95% (0.00950) | 30.46th | v2 (v2022.01.01) |
References (8)
- https://access.redhat.com/security/cve/CVE-2022-0175 Third Party AdvisoryVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2039003 Issue TrackingPatchThird Party Advisory
- https://gitlab.freedesktop.org/virgl/virglrenderer/-/commit/b05bb61f454eeb8a85164c8a31510aeb9d79129c PatchThird Party Advisory
- https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/654 PatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-0175
- https://security-tracker.debian.org/tracker/CVE-2022-0175 PatchThird Party Advisory
- https://security.gentoo.org/glsa/202210-05 vendor-advisoryThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2022-0175
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-0175 | Third Party AdvisoryVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2039003 | Issue TrackingPatchThird Party Advisory | |
| https://gitlab.freedesktop.org/virgl/virglrenderer/-/commit/b05bb61f454eeb8a85164c8a31510aeb9d79129c | PatchThird Party Advisory | |
| https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/654 | PatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2022-0175 | ||
| https://security-tracker.debian.org/tracker/CVE-2022-0175 | PatchThird Party Advisory | |
| https://security.gentoo.org/glsa/202210-05 | vendor-advisoryThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2022-0175 |
Change history (0)
No recorded changes yet.