CVE-2025-40168high

CVE-2025-40168: high-severity vulnerability in Linux

smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.1epss 0.4%
exploitation probability
0.4%top 69% of all CVEs
observed exploitation
nono source reports it
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/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/235f81045c008169cc4e1955b4a64e118eebe61bhttps://git.kernel.org/stable/c/326e5cf301d0bec0a672aa834d8254c4f9df6255https://git.kernel.org/stable/c/3f119c37aa293af41400cccb3d89fab8dcf774b0https://git.kernel.org/stable/c/4f5f52a5842937f945582a93cb9daed9ea526feehttps://git.kernel.org/stable/c/d26e80f7fb62d77757b67a1b94e4ac756bc9c658