High 8.1Published Nov 12, 2025

CVE-2025-40168smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

Updated under an hour ago (Oct 28, 2026, 10:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Sep 2, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from a046d57da19f812216f393e7c535f5858f793ac3 before 3f119c37aa293af41400cccb3d89fab8dcf774b0; from a046d57da19f812216f393e7c535f5858f793ac3 before 4f5f52a5842937f945582a93cb9daed9ea526fee; from a046d57da19f812216f393e7c535f5858f793ac3 before 326e5cf301d0bec0a672aa834d8254c4f9df6255; from a046d57da19f812216f393e7c535f5858f793ac3 before d26e80f7fb62d77757b67a1b94e4ac756bc9c658; from a046d57da19f812216f393e7c535f5858f793ac3 before 235f81045c008169cc4e1955b4a64e118eebe61b	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.