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CVE-2026-64439: linux kernel from 6.15 (inclusive), before 6.18.39 (exclusive), from 6.19 (inclusive), before 7.1.4 (exclusive); +1…
CVE-2026-64439. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00631 (percentile 0.496), scored 22-Oct-2026.
Affected technology
linux kernel · from 6.15 (inclusive), before 6.18.39 (exclusive)
linux
linux kernel · from 6.19 (inclusive), before 7.1.4 (exclusive)
linux
Linux · 00244da40f7821b242c4612428d4192230dba27f to before ef6feb77e2d91761427c5b773edc9c97e1b706ad, 00244da40f7821b242c4612428d4192230dba27f to before 2b7bd6dccff14b8b632c5244f1fd506918077221, 00244da40f7821b242c4612428d4192230dba27f to before 6c9dddeb582fde005360f4fe02c760d45ca05fb5
Linux
Linux · 6.15
Linux
Component: Not specified by the source
File: crypto/krb5/krb5_api.c
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-416
- CCR priority
- 39.4 /100 (P4)
- CVSS 3.1
- 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Source advisory
- EPSS
- 0.00631 · percentile 0.49669 · 2026-10-24
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-64439.html