CVE-2021-47274

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total 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

0.75% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 54.5% 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

2024-05-21 14:20Z2 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-125Out-of-bounds ReadBase
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

ac9f675eccb838e45af35f7011f5df5eaad917599d1e0a2be8a213f5ecfec2dd

• git.kernel.orghttps://git.kernel.org/stable/c/edcce01e0e50840a9aa6a70baed21477bdd2c9f9
• git.kernel.orghttps://git.kernel.org/stable/c/2d598902799886d67947406f26ee8e5fd2ca097f
• git.kernel.orghttps://git.kernel.org/stable/c/31ceae385556c37e4d286cb6378696448f566883
• git.kernel.orghttps://git.kernel.org/stable/c/d63f00ec908b3be635ead5d6029cc94246e1f38d
• git.kernel.orghttps://git.kernel.org/stable/c/43c32c22254b9328d7abb1c2b0f689dc67838e60
• git.kernel.orghttps://git.kernel.org/stable/c/b16a249eca2230c2cd66fa1d4b94743bd9b6ef92
• git.kernel.orghttps://git.kernel.org/stable/c/3e08a9f9760f4a70d633c328a76408e62d6f80a3