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Vulnerability record · CVE-2026-46027 · published 27 May 2026

CVE-2026-46027: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.5 CVSS 3.1 High EPSS 0.72% · top 48.1%
7.5CVSS 3.1 base score
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/22546729b96fc873b23065dc49e3d73c45cfb874 Patch
https://git.kernel.org/stable/c/257cdf0c5ced9c0fba8aba501d94b0a5fcef2086 Patch
https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f Patch
https://git.kernel.org/stable/c/5eedbfd82c2884e0010fdfb3c9446a6ebcadb691 Patch
https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f Patch
https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2 Patch
https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712 Patch
https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-46027), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.