CVE-2021-47172

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 13.3% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2024-03-25 09:16Z2 YR AGO

Last updated

2026-05-23 15:19Z3 MO AGO

Reserved

2024-03-25

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
• CWE-121Stack-based Buffer OverflowVariant

Data version

5.2

Document digest

e7f18e94d14ef102d59e0d116cae670740d9dbb19900f71ab37f8ac5e049e7cb

• git.kernel.orghttps://git.kernel.org/stable/c/f49149964d2423fb618fb6b755bb1eaa431cca2c
• git.kernel.orghttps://git.kernel.org/stable/c/f70122825076117787b91e7f219e21c09f11a5b9
• git.kernel.orghttps://git.kernel.org/stable/c/26da8040eccc6c6b0e415e9a3baf72fd39eb2fdc
• git.kernel.orghttps://git.kernel.org/stable/c/f2a772c51206b0c3f262e4f6a3812c89a650191b