CVE-2021-47179

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

0.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 51.9% 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

2024-03-25 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 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

6fa1de5fdf2be5128ec7a6615a41173d189d448ab614974f12409aa663a7aab4

• git.kernel.orghttps://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42
• git.kernel.orghttps://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48
• git.kernel.orghttps://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494
• git.kernel.orghttps://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb
• git.kernel.orghttps://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53
• git.kernel.orghttps://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a
• git.kernel.orghttps://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb