CVE-2021-46998

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 15.5% 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

2024-02-28 08:13Z2 YR AGO

Last updated

2026-08-05 08:45Z1 MO AGO

Reserved

2024-02-27

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

493252cdb3db3c9dfc853c7eb12e2a834160085a05d8925c21b2a2f489664f8c

• git.kernel.orghttps://git.kernel.org/stable/c/25a87b1f566b5eb2af2857a928f0e2310d900976
• git.kernel.orghttps://git.kernel.org/stable/c/f7f6f07774091a6ddd98500b85386c3c6afb30d3
• git.kernel.orghttps://git.kernel.org/stable/c/7afdd6aba95c8a526038e7abe283eeac3e4320f1
• git.kernel.orghttps://git.kernel.org/stable/c/6892396ebf04ea2c021d80e10f4075e014cd7cc3
• git.kernel.orghttps://git.kernel.org/stable/c/d90529392aaf498dafa95d212295d64b2cea4e24
• git.kernel.orghttps://git.kernel.org/stable/c/643001b47adc844ae33510c4bb93c236667008a3