CVE-2021-47296

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 14.4% 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 2026-08-04.

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

2024-05-21 14:35Z2 YR AGO

Last updated

2026-08-05 08:47Z2 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-401Missing Release of Memory after Effective LifetimeVariant
• CWE-99Improper Control of Resource Identifiers ('Resource Injection')Class

Data version

5.2

Document digest

479d7295b1b26bbb6a2f1e31bfb811084848a801d67aaeeb4f5de28546edea72

• git.kernel.orghttps://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50
• git.kernel.orghttps://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151
• git.kernel.orghttps://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533
• git.kernel.orghttps://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209
• git.kernel.orghttps://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252