CVE-2021-47330

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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 15.9% 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

2024-05-21 14:35Z2 YR AGO

Last updated

2026-05-11 13:52Z3 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-401Missing Release of Memory after Effective LifetimeVariant
• CWE-402Transmission of Private Resources into a New Sphere ('Resource Leak')Class

Data version

5.2

Document digest

9938dd28626e2bbd73454aaefc16e97bd1155b9eeba921ea35624452bf645a7e

• git.kernel.orghttps://git.kernel.org/stable/c/b5a2799cd62ed30c81b22c23028d9ee374e2138c
• git.kernel.orghttps://git.kernel.org/stable/c/331f5923fce4f45b8170ccf06c529e8eb28f37bc
• git.kernel.orghttps://git.kernel.org/stable/c/34f4590f5ec9859ea9136249f528173d150bd584
• git.kernel.orghttps://git.kernel.org/stable/c/cddee5c287e26f6b2ba5c0ffdfc3a846f2f10461
• git.kernel.orghttps://git.kernel.org/stable/c/ee16bed959862a6de2913f71a04cb563d7237b67
• git.kernel.orghttps://git.kernel.org/stable/c/7a80f71601af015856a0aeb1e3c294037ac3dd32
• git.kernel.orghttps://git.kernel.org/stable/c/c39cf4df19acf0133fa284a8cd83fad42cd13cc2
• git.kernel.orghttps://git.kernel.org/stable/c/b2ef1f5de40342de44fc5355321595f91774dab5
• git.kernel.orghttps://git.kernel.org/stable/c/fad92b11047a748c996ebd6cfb164a63814eeb2e