CVE-2021-46991

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

Ranks above 15.1% 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

2024-02-28 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-416Use After FreeVariant

Data version

5.2

Document digest

d2faa5146e521fe19a6e7c5dcea819e229e9cb257d45cf07d301ebc588fba015

• git.kernel.orghttps://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84
• git.kernel.orghttps://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132
• git.kernel.orghttps://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107
• git.kernel.orghttps://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1
• git.kernel.orghttps://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323
• git.kernel.orghttps://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3