CVE-2026-45977

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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-05-27 12:18Z3 MO AGO

Last updated

2026-05-27 12:18Z3 MO AGO

Reserved

2026-05-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

480e6e152764927d16018a8cc041ea61cb90ace86b6670aaf031cc1cecf43a42

• git.kernel.orghttps://git.kernel.org/stable/c/223cfef4812bdfa5ac5c1aa761cdba03cfe2c9cd
• git.kernel.orghttps://git.kernel.org/stable/c/5f10ab3643c58a22fbaee92c4701b00fcb4a465d
• git.kernel.orghttps://git.kernel.org/stable/c/ee5492fd88cfc079c19fbeac78e9e53b7f6c04f3