CVE-2021-47159

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

Equal to or higher than the score of 15.8% 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

2024-03-25 09:16Z2 YR AGO

Last updated

2026-08-05 08:46Z2 MO AGO

Reserved

2024-03-25

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-835Loop with Unreachable Exit Condition ('Infinite Loop')Base
• CWE-704Incorrect Type Conversion or CastClass

Data version

5.2

Document digest

a6ee0917c7cf09bb3bbffcbe948153e30b82af54928dcdb1f7c0088d3baf4f09

• git.kernel.orghttps://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37
• git.kernel.orghttps://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8
• git.kernel.orghttps://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6
• git.kernel.orghttps://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373
• git.kernel.orghttps://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83