CVE-2021-47323

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 ImpacttotalSuccessful exploitation gives total 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

1.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 67.0% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

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

2026-05-11 13:52Z5 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

289052a963040bc44a43609ece58cde38f2fe2999608993b9688c463bd5f7f8c

• git.kernel.orghttps://git.kernel.org/stable/c/0015581a79bbf8e521f85dddb7d3e4a66b9f51d4
• git.kernel.orghttps://git.kernel.org/stable/c/b4565a8a2d6bffb05bfbec11399d261ec16fe373
• git.kernel.orghttps://git.kernel.org/stable/c/2aef07017fae21c3d8acea9656b10e3b9c0f1e04
• git.kernel.orghttps://git.kernel.org/stable/c/522e75ed63f67e815d4ec0deace67df22d9ce78e
• git.kernel.orghttps://git.kernel.org/stable/c/7c56c5508dc20a6b133bc669fc34327a6711c24c
• git.kernel.orghttps://git.kernel.org/stable/c/a173e3b62cf6dd3c4a0a10c8a82eedfcae81a566
• git.kernel.orghttps://git.kernel.org/stable/c/b3c41ea5bc34d8c7b19e230d80e0e555c6f5057d
• git.kernel.orghttps://git.kernel.org/stable/c/f0feab82f6a0323f54d85e8b512a2be64f83648a
• git.kernel.orghttps://git.kernel.org/stable/c/90b7c141132244e8e49a34a4c1e445cce33e07f4