CVE-2026-43383

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

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 36.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-19.

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

2026-08-05 12:27Z1 MO AGO

Reserved

2026-05-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.4)

CNA CVSS vector

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

Weaknesses

• CWE-208Observable Timing DiscrepancyBase

Data version

5.2

Document digest

c1730715c2c4814147c1a70ca6e7ccb1f31a33a24c05d5ea0f971a426b56debd

• git.kernel.orghttps://git.kernel.org/stable/c/821c8751fdeecdeecabeb11704dd33439c9e4bbc
• git.kernel.orghttps://git.kernel.org/stable/c/ff44ec94d4fc8348600a69de0a8fa1102c23bce8
• git.kernel.orghttps://git.kernel.org/stable/c/345a9530756528d7ca407663d659c3c40e75c3dd
• git.kernel.orghttps://git.kernel.org/stable/c/5d305a95130a8d08b9545e47f1e18d29d59866cb
• git.kernel.orghttps://git.kernel.org/stable/c/02669e2a4d207068edce7e8b5fafd85822018ce6
• git.kernel.orghttps://git.kernel.org/stable/c/ae3831b44f477de048287493e184fc3ff913b624
• git.kernel.orghttps://git.kernel.org/stable/c/b502e97e29d791ff7a8051f29a414535739be218
• git.kernel.orghttps://git.kernel.org/stable/c/46d0d6f50dab706637f4c18a470aac20a21900d3