CVE-2021-47527

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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 16.6% 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

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

2024-05-24 15:09Z2 YR AGO

Last updated

2026-05-11 13:56Z3 MO AGO

Reserved

2024-05-24

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-401Missing Release of Memory after Effective LifetimeVariant
• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.2

Document digest

ead1fe909abe7e622699a41b72bcb5eeb4f4173acb1bfdd72885be956f1734c1

• git.kernel.orghttps://git.kernel.org/stable/c/011f6c92b5bf6e1fbfdedc8b5232f64c1c493206
• git.kernel.orghttps://git.kernel.org/stable/c/e74d9663fd57640fc3394abb5c76fa95b9cc2f2e
• git.kernel.orghttps://git.kernel.org/stable/c/1179b168fa3f3a6aae3bd140000455a0e58457db
• git.kernel.orghttps://git.kernel.org/stable/c/c5da8aa441053958594f94254592bb41264bdfbf
• git.kernel.orghttps://git.kernel.org/stable/c/e1722acf4f0d4d67b60f57e08ce16f8b66cd4b8f
• git.kernel.orghttps://git.kernel.org/stable/c/64e491c1634b73d3bddc081d08620bdc92ab2c12
• git.kernel.orghttps://git.kernel.org/stable/c/00de977f9e0aa9760d9a79d1e41ff780f74e3424