CVE-2021-47652

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

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 17.1% 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 2026-06-17.

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

2025-02-26 01:54Z1 YR AGO

Last updated

2026-05-11 13:58Z3 MO AGO

Reserved

2025-02-26

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

addc9e4e7d32902760f8ac4f0e6cf7ea6c5e630ddc6459b03f9493eb52ed407e

• git.kernel.orghttps://git.kernel.org/stable/c/d1b6a1f0c23b7164250479bf92e2893291dca539
• git.kernel.orghttps://git.kernel.org/stable/c/0fd28daec73525382e5c992db8743bf76e42cd5c
• git.kernel.orghttps://git.kernel.org/stable/c/dd3a6cc7385b89ec2303f39dfc3bafa4e24cec4b
• git.kernel.orghttps://git.kernel.org/stable/c/da8b269cc0a2526ebeaccbe2484c999eb0f822cf
• git.kernel.orghttps://git.kernel.org/stable/c/64ec3e678d76419f207b9cdd338dda438ca10b1c
• git.kernel.orghttps://git.kernel.org/stable/c/c420b540db4b5d69de0a36d8b9d9a6a79a04f05a
• git.kernel.orghttps://git.kernel.org/stable/c/d396c651e2b508b6179bb678cc029f3becbf5170
• git.kernel.orghttps://git.kernel.org/stable/c/9280ef235b05e8f19f8bc6d547b992f0a0ef398d
• git.kernel.orghttps://git.kernel.org/stable/c/1791f487f877a9e83d81c8677bd3e7b259e7cb27