CVE-2021-47013

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

0.78% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 53.4% 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

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. 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

2024-02-28 08:13Z2 YR AGO

Last updated

2026-08-05 08:45Z1 MO AGO

Reserved

2024-02-27

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

ea9a743a08e4c4b747cd873bb82cc23f1e540752798de57770578a39688385c9

• git.kernel.orghttps://git.kernel.org/stable/c/c7f75d11fe72913d2619f97b2334b083cd7bb955
• git.kernel.orghttps://git.kernel.org/stable/c/dc1b438a35773d030be0ee80d9c635c3e558a322
• git.kernel.orghttps://git.kernel.org/stable/c/16d8c44be52e3650917736d45f5904384a9da834
• git.kernel.orghttps://git.kernel.org/stable/c/55fcdd1258faaecca74b91b88cc0921f9edd775d
• git.kernel.orghttps://git.kernel.org/stable/c/9dc373f74097edd0e35f3393d6248eda8d1ba99d
• git.kernel.orghttps://git.kernel.org/stable/c/8c06f34785068b87e2b560534c77c163d6c6dca7
• git.kernel.orghttps://git.kernel.org/stable/c/e407495ba6788a67d1bd41714158c079e340879b
• git.kernel.orghttps://git.kernel.org/stable/c/6d72e7c767acbbdd44ebc7d89c6690b405b32b57