CVE-2021-46979

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

0.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 12.9% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

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

Red Hat severity

Low. 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

2024-02-28 08:13Z2 YR AGO

Last updated

2026-05-11 13:45Z3 MO AGO

Reserved

2024-02-27

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-415Double FreeVariant

Data version

5.2

Document digest

054af3e15da915ecbedd0ee17b539b8f972b96b66e72edb0c90a8ad1fbeceedc

• git.kernel.orghttps://git.kernel.org/stable/c/11e1cae5da4096552f7c091476cbadbc0d1817da
• git.kernel.orghttps://git.kernel.org/stable/c/ab6c935ba3a04317632f3b8b68675bdbaf395303
• git.kernel.orghttps://git.kernel.org/stable/c/901f84de0e16bde10a72d7eb2f2eb73fcde8fa1a