CVE-2026-43256

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

0.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 3.0% 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 2026-06-17.

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

2026-05-06 11:28Z4 MO AGO

Last updated

2026-08-05 12:26Z1 MO AGO

Reserved

2026-05-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-805Buffer Access with Incorrect Length ValueBase

Data version

5.2

Document digest

584c4cde9aa7f533e543c57d2f0707a906b90107209002bd9ec0d2862e90a9fd

• git.kernel.orghttps://git.kernel.org/stable/c/e6cbf765686fb6c1d8f2530b3daf6c66efc92f5d
• git.kernel.orghttps://git.kernel.org/stable/c/0c074e80921fd18984b75836730d76c768c84f65
• git.kernel.orghttps://git.kernel.org/stable/c/1b103307df6d461a0731be25aca69ad0335b0933
• git.kernel.orghttps://git.kernel.org/stable/c/fade67c88870f497a13ed450ba01f7236c92dd9b
• git.kernel.orghttps://git.kernel.org/stable/c/e7a38ecda2498e7ce998793ac2a46ca47317635d
• git.kernel.orghttps://git.kernel.org/stable/c/d965919af524e68cb2ab1a685872050ad2ee933d