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CVE-2021-47201

17
FAUCET Score

CVE-2021-47201 is a Linux kernel vulnerability affecting the iavf driver, where an incorrect order of function calls during VF disablement could lead to a system panic. Rated as Medium severity (CVSS 5.5), this local vulnerability requires low privileges and complexity to cause a high availability impact, specifically a denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.13, < 5.4.162CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.82CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.5CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
5.16CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*

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
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
14.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 63rd 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 Patches (2)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2021-47201Low

kernel: iavf: free q_vectors before queues in iavf_disable_vf

Apr 10, 2024

References

git.kernel.org / stable/c/78638b47132244e3934dc5dc79f6372d5ce8e98c
Patch
git.kernel.org / stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1
Patch
git.kernel.org / stable/c/926e8c83d4c1c2dac0026637eb0d492df876489e
Patch
git.kernel.org / stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f
Patch