CVE-2025-40168

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. Let's use __sk_dst_get() and dst_dev_rcu(). Note that the returned value of smc_clc_prfx_match() is not used in the caller.

CVSS 3.1

8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-25)

Published

2025-11-12

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/235f81045c008169cc4e1955b4a64e118eebe61b
• https://git.kernel.org/stable/c/326e5cf301d0bec0a672aa834d8254c4f9df6255
• https://git.kernel.org/stable/c/3f119c37aa293af41400cccb3d89fab8dcf774b0
• https://git.kernel.org/stable/c/4f5f52a5842937f945582a93cb9daed9ea526fee
• https://git.kernel.org/stable/c/d26e80f7fb62d77757b67a1b94e4ac756bc9c658

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