CVE-2026-46027

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.

References

• https://git.kernel.org/stable/c/5a8db80f721deee8e916c2cfdee78decda02ce4f
• https://git.kernel.org/stable/c/6180a296ca65b08a81914805cbc0f78da5f10a1f
• https://git.kernel.org/stable/c/83bcf9228b0501694fb2589ed1d142855a2887f2
• https://git.kernel.org/stable/c/ea0b5d0fe96356dce38f98375a57c52a04e13712
• https://git.kernel.org/stable/c/f0858e1d5624bb120b198f2a8528f97a9b0ae069