CVE-2021-47087

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

Equal to or higher than the score of 14.4% 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

2024-03-04 18:10Z2 YR AGO

Last updated

2026-08-05 08:45Z2 MO AGO

Reserved

2024-02-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-763Release of Invalid Pointer or ReferenceBase
• CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

0613eff783e88557b13a1c76b947ba9e6545100a56017c95440124786dc2b2ef

• git.kernel.orghttps://git.kernel.org/stable/c/806142c805cacd098e61bdc0f72c778a2389fe4a
• git.kernel.orghttps://git.kernel.org/stable/c/ad338d825e3f7b96ee542bf313728af2d19fe9ad
• git.kernel.orghttps://git.kernel.org/stable/c/91e94e42f6fc49635f1a16d8ae3f79552bcfda29
• git.kernel.orghttps://git.kernel.org/stable/c/18549bf4b21c739a9def39f27dcac53e27286ab5