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CVE-2026-63830: Linux 4.20
CVE-2026-63830. CVSS 3.1 base score 9.4 (CRITICAL, Source advisory). EPSS 0.00372 (percentile 0.29515), scored 15-Oct-2026.
Affected technology
Linux · d3b18ad31f93d0b6bae105c679018a1ba7daa9ca to before f126eed589eec6f201405abbc398844042ef6d57, d3b18ad31f93d0b6bae105c679018a1ba7daa9ca to before 31a110642b5fb5e61940cbcfb503445ac4f28017, d3b18ad31f93d0b6bae105c679018a1ba7daa9ca to before 9bb86d8184b37503816150c4a6ad3c17dfdbe827, d3b18ad31f93d0b6bae105c679018a1ba7daa9ca to before 0eb4c16c4adb262763bda870a8ed38a1a9dec7ec, d3b18ad31f93d0b6bae105c679018a1ba7daa9ca to before d22cc92bc41290e5783a72375e0843d9435f6001, d3b18ad31f93d0b6bae105c679018a1ba7daa9ca to before 1acdd14c0990dd1cd4b6534f00366d2e6dfce05f, d3b18ad31f93d0b6bae105c679018a1ba7daa9ca to before 21ed9540a8e1906dfcbc1bb82ba9b4de4fa4bd6d, d3b18ad31f93d0b6bae105c679018a1ba7daa9ca to before 406e8a651a7b854c41fecd5117bb282b3a6c2c6b
Linux
Linux · 4.20
Linux
Component: Not specified by the source
File: include/linux/skmsg.h, net/core/filter.c, net/core/skmsg.c, net/tls/tls_sw.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 9.4/10) rates confidentiality and integrity impact as high; availability impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.
- CCR priority
- 37.7 /100 (P4)
- CVSS 3.1
- 9.4 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L · Source advisory
- EPSS
- 0.00372 · percentile 0.29515 · 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-2026-63830.html