CVE-2026-43399

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.2% 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

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

2026-05-08 14:21Z3 MO AGO

Last updated

2026-05-11 22:23Z3 MO AGO

Reserved

2026-05-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-911Improper Update of Reference CountBase

Data version

5.2

Document digest

956f6b276a738f4980694549524df9d54da6a48b198ee3b6125638c2c12d96a5

• git.kernel.orghttps://git.kernel.org/stable/c/762f47e2b824383d5be65eee2c40a1269b7d50c8
• git.kernel.orghttps://git.kernel.org/stable/c/5409247d41f372bec5b141ef599f2d9f5e81b746
• git.kernel.orghttps://git.kernel.org/stable/c/49abfa812617a7f2d0132c70d23ac98b389c6ec1