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CVE-2021-47148

21
FAUCET Score

CVE-2021-47148 is a buffer overflow vulnerability in the Linux kernel's octeontx2-pf driver, specifically within the otx2_set_rxfh_context() function, which can be triggered by user-supplied input. With a CVSS score of 7.8 (High), this local vulnerability allows a low-privileged attacker to achieve high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.12, < 5.12.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
5.13CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
5.13CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
5.13CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
14.4%
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 46th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2021-47148Moderate

kernel: octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()

Mar 25, 2024

References

git.kernel.org / stable/c/389146bc6d2bbb20714d06624b74856320ce40f7
Patch
git.kernel.org / stable/c/e5cc361e21648b75f935f9571d4003aaee480214
Patch