CVE-2021-1058
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedNVIDIA vGPU software contains a vulnerability in the guest kernel mode driver and vGPU plugin, in which an input data size is not validated, which may lead to tampering of data or denial of service. This affects vGPU version 8.x (prior to 8.6) and version 11.0 (prior to 11.3).
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceNVIDIA vGPU software contains an input validation vulnerability in the guest kernel mode driver and vGPU plugin where input data size is not properly validated. This could allow a malicious guest VM to manipulate data or cause a denial of service condition in the hypervisor or other guest VMs.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 8.0, < 8.6>= 11.0, < 11.3CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify NVIDIA vGPU Manager is installedOn the hypervisor, check for the nvidia-vgpumanager package using package manager (e.g., rpm -qa | grep -i vgpu or dpkg -l | grep -i vgpu) or look for nvidia-smi availabilityAffected if The vGPU Manager package is present on the system
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Determine the installed vGPU Manager versionRun 'nvidia-smi' on the hypervisor and look for the driver version in the output, or query the package version directly (e.g., rpm -q nvidia-vgpumanager)Affected if The displayed version matches >= 8.0 and < 8.6, OR >= 11.0 and < 11.3
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Confirm guest VM has vGPU passthrough configuredOn the hypervisor, run 'nvidia-smi -q' or check VM configuration to verify any guest VMs are assigned a virtual GPU (vGPU type)Affected if Guest VMs are configured with vGPU passthrough and the hypervisor vGPU Manager version is in the affected range
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Check for guest kernel mode driver presenceWithin guest VMs, run 'lsmod | grep nvidia' or 'nvidia-smi' to see if the NVIDIA guest driver is loadedAffected if The guest VM has the NVIDIA vGPU guest driver installed and the vGPU Manager version is vulnerable
A system is affected if NVIDIA vGPU Manager version is 8.0 through 8.5.x or 11.0 through 11.2.x and guest VMs are configured to use vGPU passthrough.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data8.611.3
Upgrade vGPU software to version 8.6 or later (for 8.x branches) or version 11.3 or later (for 11.0 branch) to receive the input validation fix.
- Consultation6.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-1058 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-1058 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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