CVE-2021-47343

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

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 18.9% 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

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

2024-05-21 14:35Z2 YR AGO

Last updated

2026-08-05 08:47Z1 MO AGO

Reserved

2024-05-21

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-1188Initialization of a Resource with an Insecure DefaultBase
• CWE-824Access of Uninitialized PointerBase

Data version

5.2

Document digest

12207e902c32e2d9ec036bec8a465f04dedae83a8468da31c035d22ae4d8b642

• git.kernel.orghttps://git.kernel.org/stable/c/4c84b3e0728ffe10d89c633694c35a02b5c477dc
• git.kernel.orghttps://git.kernel.org/stable/c/c154775619186781aaf8a99333ac07437a1768d5
• git.kernel.orghttps://git.kernel.org/stable/c/73f27adaa73e3057a9ec464e33c4f54d34ea5de3
• git.kernel.orghttps://git.kernel.org/stable/c/8fbae4a1bdb5b889490cdee929e68540151536e5
• git.kernel.orghttps://git.kernel.org/stable/c/964d57d1962d7e68f0f578f05d9ae4a104d74851
• git.kernel.orghttps://git.kernel.org/stable/c/ba47e65a5de3e0e8270301a409fc63d3129fdb9e
• git.kernel.orghttps://git.kernel.org/stable/c/89bf942314b78d454db92427201421b5dec132d9
• git.kernel.orghttps://git.kernel.org/stable/c/ad365e9351ac2b450e7e79932ff6abf59342d91a
• git.kernel.orghttps://git.kernel.org/stable/c/b6e58b5466b2959f83034bead2e2e1395cca8aeb