CVE-2021-47186

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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 12.9% 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

2024-04-10 18:56Z2 YR AGO

Last updated

2026-05-11 13:49Z3 MO AGO

Reserved

2024-03-25

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-476NULL Pointer DereferenceBase
• CWE-690Unchecked Return Value to NULL Pointer DereferenceCompound

Data version

5.2

Document digest

bc0e7c0e3088bed7edba8bf12b5a6d878fe08bf37fd15e0198c39e17fd08ec04

• git.kernel.orghttps://git.kernel.org/stable/c/a7d91625863d4ffed63b993b5e6dc1298b6430c9
• git.kernel.orghttps://git.kernel.org/stable/c/9404c4145542c23019a80ab1bb2ecf73cd057b10
• git.kernel.orghttps://git.kernel.org/stable/c/3e6db079751afd527bf3db32314ae938dc571916