CVE-2026-43459

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

0.11% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 1.7% of scored records. A rank, not a probability.

NVD base score

7.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/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

2026-05-08 14:22Z3 MO AGO

Last updated

2026-08-05 12:28Z1 MO AGO

Reserved

2026-05-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.3)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Weaknesses

• CWE-416Use After FreeVariant
• CWE-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

9357b9be7aa66eefabdf0800d438687515dab8572460532c7b10ca8b5176f12c

• git.kernel.orghttps://git.kernel.org/stable/c/bf80a89da97285d9b877e0c6995e870d46b8025c
• git.kernel.orghttps://git.kernel.org/stable/c/3887e514978d28216246360b46a9cb534969eb5a
• git.kernel.orghttps://git.kernel.org/stable/c/231568afbc0cd25b8fb2a94ebf9738eabe1cf007
• git.kernel.orghttps://git.kernel.org/stable/c/317a9298c54bb00319da73e5a7179f00e67fcbdf
• git.kernel.orghttps://git.kernel.org/stable/c/eab71e11ce2447c1e01809cbc11eab4234cf8dc8
• git.kernel.orghttps://git.kernel.org/stable/c/7d33e6140945482a07f8089ee86e13e02553ffdb
• git.kernel.orghttps://git.kernel.org/stable/c/c054f0607c8bb1b1aa529bc109e4149298a1cccd
• git.kernel.orghttps://git.kernel.org/stable/c/95bc5c225513fc3c4ce169563fb5e3929fbb938b