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CVE-2026-63979: Linux 6.4
CVE-2026-63979. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00614 (percentile 0.48271), scored 15-Oct-2026.
Affected technology
Linux · 3b3009ea8abb713b022d94fba95ec270cf6e7eae to before 68eba6519cbd6359fb554a9720f3a3b6b2eba23f, 3b3009ea8abb713b022d94fba95ec270cf6e7eae to before c06876d4fac38f35820946ee3b1be7d7da799cd4, 3b3009ea8abb713b022d94fba95ec270cf6e7eae to before f4251190e58b209999c1ba9e6d2976136a1be055
Linux
Linux · 6.4
Linux
Component: Not specified by the source
File: net/handshake/handshake-test.c, net/handshake/netlink.c, net/handshake/request.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.
- 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
- 0.00614 · percentile 0.48271 · 2026-10-15
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-16 16:55:38.548135+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-63979.html