Vulnerability 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. 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.
References
- https://git.kernel.org/stable/c/235f81045c008169cc4e1955b4a64e118eebe61b
- https://git.kernel.org/stable/c/d26e80f7fb62d77757b67a1b94e4ac756bc9c658
FAQ
What is CVE-2025-40168?
CVE-2025-40168 is a documented vulnerability. 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 u...
How severe is CVE-2025-40168?
CVSS scoring is not yet available for CVE-2025-40168. Check NVD for updates.
Is there a patch for CVE-2025-40168?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.