CVE-2021-47254

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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 15.3% 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 14:19Z2 YR AGO

Last updated

2026-08-05 08:46Z2 MO AGO

Reserved

2024-04-10

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

3728e5ac5106f9f6b94849b2bb957222392974ef038bef2511133d9b1dd69659

• git.kernel.orghttps://git.kernel.org/stable/c/38ce329534500bf4ae71f81df6a37a406cf187b4
• git.kernel.orghttps://git.kernel.org/stable/c/92869945cc5b78ee8a1ef90336fe070893e3458a
• git.kernel.orghttps://git.kernel.org/stable/c/0364742decb0f02bc183404868b82896f7992595
• git.kernel.orghttps://git.kernel.org/stable/c/094bf5670e762afa243d2c41a5c4ab71c7447bf4
• git.kernel.orghttps://git.kernel.org/stable/c/86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d
• git.kernel.orghttps://git.kernel.org/stable/c/a61156314b66456ab6a291ed5deba1ebd002ab3c
• git.kernel.orghttps://git.kernel.org/stable/c/e87ef30fe73e7e10d2c85bdcc778dcec24dca553
• git.kernel.orghttps://git.kernel.org/stable/c/1ab19c5de4c537ec0d9b21020395a5b5a6c059b2