CVE-2021-47388

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

0.34% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 27.4% 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

2024-05-21 15:03Z2 YR AGO

Last updated

2026-08-05 08:47Z2 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

2423f680d6a09723c5f6a3fd99d3cb392a9299841b09f2fe485ee73720b8e01c

• git.kernel.orghttps://git.kernel.org/stable/c/447d001b875d0e7f211c4ba004916028da994258
• git.kernel.orghttps://git.kernel.org/stable/c/31de381aef0ab1b342f62485118dc8a19363dc78
• git.kernel.orghttps://git.kernel.org/stable/c/f556e1d6fb9f2923a9a36f3df638c7d79ba09dbb
• git.kernel.orghttps://git.kernel.org/stable/c/3d5d629c99c468458022e9b381789de3595bf4dd
• git.kernel.orghttps://git.kernel.org/stable/c/50149e0866a82cef33e680ee68dc380a5bc75d32
• git.kernel.orghttps://git.kernel.org/stable/c/57de2dcb18742dc2860861c9f496da7d42b67da0
• git.kernel.orghttps://git.kernel.org/stable/c/27d3eb5616ee2c0a3b30c3fa34813368ed1f3dc9
• git.kernel.orghttps://git.kernel.org/stable/c/94513069eb549737bcfc3d988d6ed4da948a2de8