CVE-2026-80637

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-80637

Key Details

CVE	CVE-2026-80637
CVSS Score / Version	7.5 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is none; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

netfilter: synproxy: fix unaligned memory access in timestamp adjustment

Use get_unaligned_be32() and put_unaligned_be32() to safely read and

write the timestamp fields. This prevents performance degradation due to

unaligned memory access or even a crash on strict alignment

architectures.

This follows the implementation of timestamp parsing in the networking

stack at tcp_parse_options() and synproxy_parse_options(). (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-80637
CVE	https://www.cve.org/CVERecord?id=CVE-2026-80637

Source

Reference

NVD

CVE