CVE-2021-47476

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

0.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 32.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. 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

2024-05-22 08:19Z2 YR AGO

Last updated

2026-05-11 13:55Z5 MO AGO

Reserved

2024-05-22

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Medium (CVSS 4.6)

CNA CVSS vector

CVSS:3.1/AV:P/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

b571642dc451b504e0c3ddc085f968e5e8eb0bd34d3435ef8e8ce073cd4a69ba

• git.kernel.orghttps://git.kernel.org/stable/c/58478143771b20ab219937b1c30a706590a59224
• git.kernel.orghttps://git.kernel.org/stable/c/aa39738423503825625853b643b9e99d11c23816
• git.kernel.orghttps://git.kernel.org/stable/c/df7b1238f3b599a0b9284249772cdfd1ea83a632
• git.kernel.orghttps://git.kernel.org/stable/c/bc51111bf6e8e7b6cc94b133e4c291273a16acd1
• git.kernel.orghttps://git.kernel.org/stable/c/b0156b7c9649d8f55a2ce3d3258509f1b2a181c3
• git.kernel.orghttps://git.kernel.org/stable/c/ef143dc0c3defe56730ecd3a9de7b3e1d7e557c1
• git.kernel.orghttps://git.kernel.org/stable/c/4a9d43cb5d5f39fa39fc1da438517004cc95f7ea
• git.kernel.orghttps://git.kernel.org/stable/c/d6a727a681a39ae4f73081a9bedb45d14f95bdd1
• git.kernel.orghttps://git.kernel.org/stable/c/907767da8f3a925b060c740e0b5c92ea7dbec440