Security Advisory

CVE-2025-40168

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-11-12 10:46:51

Last updated 2026-06-16 20:00:14

Assigner Linux

State PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match(). smc_clc_prfx_match() is called from smc_listen_work() and not under RCU nor RTNL. Using sk_dst_get(sk)->dev could trigger UAF. Lets use __sk_dst_get() and dst_dev_rcu(). Note that the returned value of smc_clc_prfx_match() is not used in the caller.

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