CVE-2021-1122

Service interruption via NULL pointer dereference

Published Oct 29, 2021 · Updated Aug 3, 2024

NULL pointer dereference in NVIDIA vGPU Software allows local users to interrupt the Virtual GPU Manager through a guest OS. The vGPU plugin dereferences a NULL pointer, but NVIDIA has not disclosed the triggering input or code path. A low-privilege guest OS user must reach the host-side plugin; the effect is limited to availability, and the interruption mode is undisclosed.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in NVIDIA vGPU Software allows local users to interrupt the Virtual GPU Manager through a guest OS. The vGPU plugin dereferences a NULL pointer, but NVIDIA has not disclosed the triggering input or code path. A low-privilege guest OS user must reach the host-side plugin; the effect is limited to availability, and the interruption mode is undisclosed.

The record

CVE
CVE-2021-1122
Published
Oct 29, 2021
Updated
Aug 3, 2024
Vendor
NVIDIA
Product
NVIDIA vGPU Software
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=vGPU version 13.x (prior to 13.1), 12.x (prior to 12.4), version 11.x (prior to 11.6) and version 8.x (prior 8.9).

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

NVIDIA · NVIDIA vGPU Softwareversion=vGPU version 13.x (prior to 13.1), 12.x (prior to 12.4), version 11.x (prior to 11.6) and version 8.x (prior 8.9).

Published CVSS scores

5.5NVIDIA CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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