CVE-2021-47321

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

Ranks above 16.1% 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

Analyzed. NVD last modified this record on 2026-06-17.

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 14:35Z2 YR AGO

Last updated

2026-05-11 13:52Z3 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

501b9a1dd8fb7c718c8619749d7f365cfe6a23442d8f223341a06d3b3a41fe3f

• git.kernel.orghttps://git.kernel.org/stable/c/58606882ad8ec6c39e0f40344b922921ef94ab4d
• git.kernel.orghttps://git.kernel.org/stable/c/ca96b8ea5e74956071154bdb456778cc3027e79f
• git.kernel.orghttps://git.kernel.org/stable/c/8bec568d7518b1504a602ed5376bb322e4dbb270
• git.kernel.orghttps://git.kernel.org/stable/c/ecd620e0fb1ff7f78fdb593379b2e6938c99707a
• git.kernel.orghttps://git.kernel.org/stable/c/db222f1477ad5692cd454709b714949807e5d111
• git.kernel.orghttps://git.kernel.org/stable/c/66ba9cf929b1c4fabf545bd4c18f6f64e23e46e4
• git.kernel.orghttps://git.kernel.org/stable/c/4c05dac488a660fe2925c047ecb119e7afaaeb1e
• git.kernel.orghttps://git.kernel.org/stable/c/1a053c4d716898a53c2e31c574a70ea0c37044a3
• git.kernel.orghttps://git.kernel.org/stable/c/d0212f095ab56672f6f36aabc605bda205e1e0bf