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CVE-2021-47423

17
FAUCET Score

CVE-2021-47423 is a memory leak vulnerability in the Linux kernel's Nouveau DRM driver, specifically affecting the debugfs component. This flaw, rated Medium severity (CVSS 5.5), arises from improper file release mechanisms, leading to a denial of service (availability) impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.5, < 4.9.287CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.10, < 4.14.251CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.211CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.153CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.73CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
13.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 58th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2021-47423Low

kernel: drm/nouveau/debugfs: fix file release memory leak

May 21, 2024

References

git.kernel.org / stable/c/11cd944bb87d9e575b94c07c952105eda745b459
Patch
git.kernel.org / stable/c/1508b09945bde393326a9dab73b1fc35f672d771
Patch
git.kernel.org / stable/c/88c3610045ca6e699331b6bb5c095c5565f30721
Patch
git.kernel.org / stable/c/9f9d4c88b2edc7924e19c44909cfc3fa4e4d3d43
Patch
git.kernel.org / stable/c/df0c9418923679bc6d0060bdb1b5bf2c755159e0
Patch
git.kernel.org / stable/c/f5a8703a9c418c6fc54eb772712dfe7641e3991c
Patch
git.kernel.org / stable/c/f69556a42043b5444ca712ee889829ba89fdcba8
Patch