CVE-2026-64303

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

0.69% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 50.2% 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 2026-09-03.

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

2026-07-25 08:49Z1 MO AGO

Last updated

2026-08-17 04:53Z18 DAYS 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-416Use After FreeVariant

Data version

5.2

Document digest

bed3bcfbb97977311738b4e1abfca01c42f01a9a0991bc8e27bb8b6559dd4e2d

• git.kernel.orghttps://git.kernel.org/stable/c/ad370d1c7a9a832f77b2341513cd31188c9443af
• git.kernel.orghttps://git.kernel.org/stable/c/cce2063404b2341e7b2bbf85eddfcd70a31a0033
• git.kernel.orghttps://git.kernel.org/stable/c/af39a2698f69b584d14a00cffe0f51a2caa15337
• git.kernel.orghttps://git.kernel.org/stable/c/e65505d91fa036a238968e4c10744244d1b968c4
• git.kernel.orghttps://git.kernel.org/stable/c/d5c1060218a3749c8a18b36f8169d910fce20639
• git.kernel.orghttps://git.kernel.org/stable/c/808033d80d5c9f8adf7e8de9317389270ce13430
• git.kernel.orghttps://git.kernel.org/stable/c/9d000bdd250d649a11cd7f733175686877344582
• git.kernel.orghttps://git.kernel.org/stable/c/01980b5da56e573d62798d0ff6c86bcaa2b22cbe