CVE-2021-47436

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 13.4% 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

2024-05-22 06:19Z2 YR AGO

Last updated

2026-05-23 15:19Z3 MO AGO

Reserved

2024-05-21

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

Data version

5.2

Document digest

b3698b9c04a0cee5c33440cd6500eff45222df8025082b852956a414bd95d28b

• git.kernel.orghttps://git.kernel.org/stable/c/5ed60a430fb5f3d93e7fef66264daef466b4d10c
• git.kernel.orghttps://git.kernel.org/stable/c/e923bce31ffefe4f60edfc6b84f62d4a858f3676
• git.kernel.orghttps://git.kernel.org/stable/c/9ab5d539bc975b8dcde86eca1b58d836b657732e
• git.kernel.orghttps://git.kernel.org/stable/c/9d89e287116796bf987cc48f5c8632ef3048f8eb
• git.kernel.orghttps://git.kernel.org/stable/c/ff9249aab39820be11b6975a10d94253b7d426fc
• git.kernel.orghttps://git.kernel.org/stable/c/c2115b2b16421d93d4993f3fe4c520e91d6fe801