CVE-2026-46027

HighCVSS 7.5/10Last modified Oct 19, 2026

Description

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

net/smc: avoid early lgr access in smc_clc_wait_msg

A CLC decline can be received while the handshake is still in an early stage, before the connection has been associated with a link group.

The decline handling in smc_clc_wait_msg() updates link-group level sync state for first-contact declines, but that state only exists after link group setup has completed. Guard the link-group update accordingly and keep the per-socket peer diagnosis handling unchanged.

This preserves the existing sync_err handling for established link-group contexts and avoids touching link-group state before it is available.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

VendorProductVersions
LinuxLinux>= 0cfdd8f92cac01afbb12e4500514036a2b78756b, < 257cdf0c5ced9c0fba8aba501d94b0a5fcef2086; >= 0cfdd8f92cac01afbb12e4500514036a2b78756b, < 22546729b96fc873b23065dc49e3d73c45cfb874; >= 0cfdd8f92cac01afbb12e4500514036a2b78756b, < 5eedbfd82c2884e0010fdfb3c9446a6ebcadb691; >= 0cfdd8f92cac01afbb12e4500514036a2b78756b, < f0858e1d5624bb120b198f2a8528f97a9b0ae069; >= 0cfdd8f92cac01afbb12e4500514036a2b78756b, < 6180a296ca65b08a81914805cbc0f78da5f10a1f; >= 0cfdd8f92cac01afbb12e4500514036a2b78756b, < ea0b5d0fe96356dce38f98375a57c52a04e13712; >= 0cfdd8f92cac01afbb12e4500514036a2b78756b, < 83bcf9228b0501694fb2589ed1d142855a2887f2; >= 0cfdd8f92cac01afbb12e4500514036a2b78756b, < 5a8db80f721deee8e916c2cfdee78decda02ce4f
LinuxLinux4.11

References

Timeline

Published
May 27, 2026
Last modified
Oct 19, 2026
NVD status
Modified

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CVE-2026-46027: High severity, CVSS 7.5 | Vulnix