CVE-2021-47505

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

Equal to or higher than the score of 16.5% 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

2024-05-24 15:01Z2 YR AGO

Last updated

2026-08-05 08:48Z2 MO AGO

Reserved

2024-05-22

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

1844cdc537045b661da21098da56937ca3310306b845f2723c485b9a27f93ec2

• git.kernel.orghttps://git.kernel.org/stable/c/321fba81ec034f88aea4898993c1bf15605c023f
• git.kernel.orghttps://git.kernel.org/stable/c/4105e6a128e8a98455dfc9e6dbb2ab0c33c4497f
• git.kernel.orghttps://git.kernel.org/stable/c/47ffefd88abfffe8a040bcc1dd0554d4ea6f7689
• git.kernel.orghttps://git.kernel.org/stable/c/60d311f9e6381d779d7d53371f87285698ecee24
• git.kernel.orghttps://git.kernel.org/stable/c/50252e4b5e989ce64555c7aef7516bdefc2fea72