CVE-2026-64089

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

0.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 43.9% 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 2026-08-11.

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

2026-07-19 15:39Z1 MO AGO

Last updated

2026-08-05 12:39Z1 MO AGO

Reserved

2026-07-19

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-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

9cc38501a138a68ba8a404d4bdc5aec49de9487f48cce71f5fd4b300d658e0d6

• git.kernel.orghttps://git.kernel.org/stable/c/6314089acf0ddf64376fdc0b1420695504c73f52
• git.kernel.orghttps://git.kernel.org/stable/c/55dc41fe8821e9a849e147255ad572bc933a9d15
• git.kernel.orghttps://git.kernel.org/stable/c/c424e8519ac78eac5d9f4eecf06208a0d619ec14
• git.kernel.orghttps://git.kernel.org/stable/c/22d59c72f4a47ffec121d0610f70d0d70c3c11c8
• git.kernel.orghttps://git.kernel.org/stable/c/eb235472b52ef36981c5aad330485eaf2382c53b
• git.kernel.orghttps://git.kernel.org/stable/c/179eb62506a02d00370bd6478898cb632e10986c
• git.kernel.orghttps://git.kernel.org/stable/c/d29abf70c665730e249d2ec8e1402095ae26bcee
• git.kernel.orghttps://git.kernel.org/stable/c/fc92cdfcb295cefa4344d71a527d61b638b7bfc4