CVE-2026-64559

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 1.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Received. NVD last modified this record on 2026-10-19.

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

2026-07-29 16:31Z3 MO AGO

Last updated

2026-10-19 20:48Z10 DAYS AGO

Reserved

2026-07-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-805Buffer Access with Incorrect Length ValueBase

Data version

5.2

Document digest

d72f0af08b9e212ef8bc8e070e73a9324733dc000ce115f4f1063c5009dc2eb3

• git.kernel.orghttps://git.kernel.org/stable/c/0a9e34ccbe772b8f321388cdbdf4f22b94e513e7
• git.kernel.orghttps://git.kernel.org/stable/c/693bf91d4db134f9b1c2840c8e287eee3d993bac
• git.kernel.orghttps://git.kernel.org/stable/c/7e7e03848c918aa0acad5ffd75d929e3afec1554
• git.kernel.orghttps://git.kernel.org/stable/c/b3d4ab2d7df9426f7f1d3671d7e2108f2ca6e970