CVE-2026-64055

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

0.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 41.6% 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 2026-09-02.

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 12:38Z1 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-437Incomplete Model of Endpoint FeaturesBase

Data version

5.2

Document digest

6387ed0435e42438bfaaf53491e6bc5e6d022d8b4192c62f4212b9655af425b4

• git.kernel.orghttps://git.kernel.org/stable/c/df31e3b64455293df1ea89c7da7d5c9bfbcdd253
• git.kernel.orghttps://git.kernel.org/stable/c/7af1fabdee744b7995fe01b30b77dfc397657cb5
• git.kernel.orghttps://git.kernel.org/stable/c/75105fcf73f1ce7d9f769aaefec6e6d6645d5ac0
• git.kernel.orghttps://git.kernel.org/stable/c/78cf08b3be47c28f07008a76c932bad7cdffa9d8
• git.kernel.orghttps://git.kernel.org/stable/c/7123cf481e21b54eb6adc4cb0d8dc2876aeaee41
• git.kernel.orghttps://git.kernel.org/stable/c/c373b34877afea61c89e0dd2e38948c624249b9b
• git.kernel.orghttps://git.kernel.org/stable/c/46806096f35b8d3dfa2f321ddd77f597edcdb85f
• git.kernel.orghttps://git.kernel.org/stable/c/ebd8ec2b309e3a447851b456ccaf8fb39f3661e7