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CVE-2021-47161

16
FAUCET Score

CVE-2021-47161 is a resource leak vulnerability in the Linux kernel's spi-fsl-dspi driver, affecting Linux kernel versions. This medium-severity flaw (CVSS 5.5) could lead to a denial of service (A:H) if a local attacker with low privileges (AV:L/PR:L) exploits the unhandled resource allocation in an error path. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.10, < 4.14.241CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.199CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.124CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.42CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.12.9CPE 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
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 60th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

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-2021-47161Low

kernel: spi: spi-fsl-dspi: Fix a resource leak in an error handling path

Mar 25, 2024

References

git.kernel.org / stable/c/00450ed03a17143e2433b461a656ef9cd17c2f1d
Patch
git.kernel.org / stable/c/10a089bae827ec30ad9b6cb7048020a62fae0cfa
Patch
git.kernel.org / stable/c/12391be4724acc9269e1845ccbd881df37de4b56
Patch
git.kernel.org / stable/c/15d1cc4b4b585f9a2ce72c52cca004d5d735bdf1
Patch
git.kernel.org / stable/c/680ec0549a055eb464dce6ffb4bfb736ef87236e
Patch
git.kernel.org / stable/c/fe6921e3b8451a537e01c031b8212366bb386e3e
Patch