CVE-2021-47379

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

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 17.3% 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

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

2024-05-21 15:03Z2 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-416Use After FreeVariant

Data version

5.2

Document digest

caaf005d54520e90ced449b15361cdcd75882fac0c8b5f4c5b6d2caf5824c4ec

• git.kernel.orghttps://git.kernel.org/stable/c/d12ddd843f1877de1f7dd2aeea4907cf9ff3ac08
• git.kernel.orghttps://git.kernel.org/stable/c/f58d305887ad7b24986d58e881f6806bb81b2bdf
• git.kernel.orghttps://git.kernel.org/stable/c/7c2c69e010431b0157c9454adcdd2305809bf9fb
• git.kernel.orghttps://git.kernel.org/stable/c/858560b27645e7e97aca37ee8f232cccd658fbd2