CVE-2021-47239

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

Equal to or higher than the score of 13.5% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/I:H/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

2024-05-21 14:19Z2 YR AGO

Last updated

2026-05-11 13:50Z5 MO AGO

Reserved

2024-04-10

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

147ee7ee630a8544e606c574a8a6210b415387bbadfac3b9fb5519d2dd8838e8

• git.kernel.orghttps://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b
• git.kernel.orghttps://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504
• git.kernel.orghttps://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b
• git.kernel.orghttps://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b
• git.kernel.orghttps://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b
• git.kernel.orghttps://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb
• git.kernel.orghttps://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d
• git.kernel.orghttps://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d