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CVE-2021-47149

17
FAUCET Score

CVE-2021-47149 is a null-pointer dereference vulnerability in the Fujitsu network driver (fmvj18x) within the Linux kernel, affecting versions of linux_kernel. This medium-severity vulnerability (CVSS 5.5) has a local attack vector with low complexity, potentially leading to a denial of service (system crash) if an attacker can execute code on the affected system. There is currently no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.4.271CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.5, < 4.9.271CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.10, < 4.14.235CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.193CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.124CPE 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
13.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 60th 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-2021-47149Low

kernel: net: fujitsu: fix potential null-ptr-deref

Mar 25, 2024

References

git.kernel.org / stable/c/22049c3d40f08facd1867548716a484dad6b3251
Patch
git.kernel.org / stable/c/52202be1cd996cde6e8969a128dc27ee45a7cb5e
Patch
git.kernel.org / stable/c/6dbf1101594f7c76990b63c35b5a40205a914b6b
Patch
git.kernel.org / stable/c/71723a796ab7881f491d663c6cd94b29be5fba50
Patch
git.kernel.org / stable/c/7883d3895d0fbb0ba9bff0f8665f99974b45210f
Patch
git.kernel.org / stable/c/b92170e209f7746ed72eaac98f2c2f4b9af734e6
Patch
git.kernel.org / stable/c/c4f1c23edbe921ab2ecd6140d700e756cd44c5f7
Patch
git.kernel.org / stable/c/f14bf57a08779a5dee9936f63ada0149ea89c5e6
Patch