CVE-2026-43304

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

0.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 41.1% of scored records. A rank, not a probability.

NVD base score

9.8 (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: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 13:11Z3 MO AGO

Last updated

2026-08-05 12:27Z1 MO AGO

Reserved

2026-05-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-1284Improper Validation of Specified Quantity in InputBase

Data version

5.2

Document digest

c8bbd002bff3c7366d8cbdd5a6816130d6993e63d7d6c04496fb20ad95dbc0fb

• git.kernel.orghttps://git.kernel.org/stable/c/6405e8c680974bb74e2c98d5249fb52c7b12a6c6
• git.kernel.orghttps://git.kernel.org/stable/c/8d745d38c88ecbed95f6b2b39857bf89f35a3244
• git.kernel.orghttps://git.kernel.org/stable/c/e1dc45d97975f9db65694d234fbddf1915176e16
• git.kernel.orghttps://git.kernel.org/stable/c/1b275bd49e58752efb83767a5d1aed41356c5e64
• git.kernel.orghttps://git.kernel.org/stable/c/c1a0f5f1e5e7e98c36a362ec3d1fcfd9932931ed
• git.kernel.orghttps://git.kernel.org/stable/c/d82467c07b03a27c3c5469b62bb3b726305a80bb
• git.kernel.orghttps://git.kernel.org/stable/c/ac431d597a9bdfc2ba6b314813f29a6ef2b4a3bf