CVE-2021-1056

NVIDIA GPU Display Driver for Linux, all versions, contains a vulnerability in the kernel mode layer (nvidia.ko) in which it does not completely honor operating system file system permissions to provide GPU device-level isolation, which may lead to denial of service or information disclosure.

Published: 2021-01-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-1056 is rated Moderate Risk (50/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.78%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-1056

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 6.55% 1.78% -4.78%
2 2025-12-28 7.72% 6.55% -1.16%
3 2025-12-27 — 7.72% —

Full EPSS history (32 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-1056

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.2 [email protected]
3.6 2.0 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 4.9 [email protected]

Weakness enumeration for CVE-2021-1056

OS Trackers for CVE-2021-1056

vendor priority summary link
debian not yet assigned CVE-2021-1056 not yet assigned priority: Debian including 5 source packages (nvidia-graphics-drivers, nvidia-graphics-drivers-legacy-340xx, nvidia-graphics-drivers-legacy-390xx, nvidia-graphics-drivers-tesla-418, nvidia-graphics-drivers-tesla-450), 12 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 11, open 1. https://security-tracker.debian.org/tracker/CVE-2021-1056
gentoo normal CVE-2021-1056: 1 GLSA(s) (202310-02), 1 atom(s) (x11-drivers/nvidia-drivers); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-1056
suse high — https://www.suse.com/security/cve/CVE-2021-1056/
ubuntu medium CVE-2021-1056 medium priority: Ubuntu including 7 source packages (nvidia-graphics-drivers-390, nvidia-graphics-drivers-418-server, …), 42 status rows across 6 suites (bionic, focal, groovy, trusty, upstream, xenial): released 15, DNE 14, ignored 7, needs-triage 6. https://ubuntu.com/security/CVE-2021-1056

Affected software / configurations for CVE-2021-1056

Vendor Product Version Raw CPE
nvidia gpu_driver >= 390, < 390.141 cpe:2.3:a:nvidia:gpu_driver:*:*:*:*:*:*:*:*
nvidia gpu_driver >= 450, < 450.102.04 cpe:2.3:a:nvidia:gpu_driver:*:*:*:*:*:*:*:*
nvidia gpu_driver >= 460, < 460.32.03 cpe:2.3:a:nvidia:gpu_driver:*:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

References for CVE-2021-1056

cvelogic Threat Intelligence