CVE-2021-47338

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 18.6% 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

2024-05-21 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-416Use After FreeVariant

Data version

5.2

Document digest

70d6379745a224e31b7ada95345bc97893ce92759c722a40bb24863e99a6506a

• git.kernel.orghttps://git.kernel.org/stable/c/359311b85ebec7c07c3a08ae2f3def946cad33fa
• git.kernel.orghttps://git.kernel.org/stable/c/087bff9acd2ec6db3f61aceb3224bde90fe0f7f8
• git.kernel.orghttps://git.kernel.org/stable/c/f193509afc7ff37a46862610c93b896044d5b693
• git.kernel.orghttps://git.kernel.org/stable/c/d6e76469157d8f240e5dec6f8411aa8d306b1126
• git.kernel.orghttps://git.kernel.org/stable/c/0af778269a522c988ef0b4188556aba97fb420cc