CVE-2026-45866

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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 5.8% 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 2026-06-25.

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 12:15Z3 MO AGO

Last updated

2026-05-27 12:15Z3 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-416Use After FreeVariant
• CWE-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

07d71ddbb309607957b4eb28378afc5f8bb88f2acfea0cd179782f8b6a39d0d1

• git.kernel.orghttps://git.kernel.org/stable/c/5e266ba8d330d3b8e5bc198f238cd8901826cfa1
• git.kernel.orghttps://git.kernel.org/stable/c/d3c75db4e0460641dbcd274b40867e252d801da1
• git.kernel.orghttps://git.kernel.org/stable/c/4e63d6f68544ae5269ac9735ae5b69b59b5b8725
• git.kernel.orghttps://git.kernel.org/stable/c/331e2b7051635780edea248dd08ae2026c126f4a
• git.kernel.orghttps://git.kernel.org/stable/c/52731ef4438155cea782fac74e547a327ab9e7c5
• git.kernel.orghttps://git.kernel.org/stable/c/c8c197aaa56b25a2d54f3aa07e27e228d6c08546
• git.kernel.orghttps://git.kernel.org/stable/c/40962f2bf8cdba63af23aec95ad3f49b689e58e2
• git.kernel.orghttps://git.kernel.org/stable/c/308e7e4d0a846359685f40aade023aee7b27284c