CVE-2026-64018

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

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 3.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-07-30.

Red Hat severity

Important. 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

2026-07-19 15:39Z1 MO AGO

Last updated

2026-08-05 12:38Z1 MO AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

56f1512418658c2961a54188933932b24d3c9e5e12e11cb42618a65b6a0a5d2c

• git.kernel.orghttps://git.kernel.org/stable/c/5ddc715324badd7f2641bc177db1d027b402adae
• git.kernel.orghttps://git.kernel.org/stable/c/ff1d5af207bcea857d45fe81505f1bc4b29eaef0
• git.kernel.orghttps://git.kernel.org/stable/c/01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01
• git.kernel.orghttps://git.kernel.org/stable/c/763a372d344fb12fae566d36ddb46e92454ad58c
• git.kernel.orghttps://git.kernel.org/stable/c/fa627a5eaa83fc0261f44ef3769693b886ca6e27
• git.kernel.orghttps://git.kernel.org/stable/c/355e9f2b2a7887ca38100127989af3e422ba71d0
• git.kernel.orghttps://git.kernel.org/stable/c/b809d0409991b75a6cff846a5ac27c3062953f84