CVE-2025-40168
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Linux
PublishedNov 12, 2025
First seenNov 12, 2025
How to fix
Update
- Linux Linux3f119c37aa293af41400cccb3d89fab8dcf774b0, 4f5f52a5842937f945582a93cb9daed9ea526fee, 326e5cf301d0bec0a672aa834d8254c4f9df6255, d26e80f7fb62d77757b67a1b94e4ac756bc9c658, 235f81045c008169cc4e1955b4a64e118eebe61b or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | a046d57da19f812216f393e7c535f5858f793ac3 ≤ v < 3f119c37aa293af41400cccb3d89fab8dcf774b0, a046d57da19f812216f393e7c535f5858f793ac3 ≤ v < 4f5f52a5842937f945582a93cb9daed9ea526fee, a046d57da19f812216f393e7c535f5858f793ac3 ≤ v < 326e5cf301d0bec0a672aa834d8254c4f9df6255, a046d57da19f812216f393e7c535f5858f793ac3 ≤ v < d26e80f7fb62d77757b67a1b94e4ac756bc9c658, a046d57da19f812216f393e7c535f5858f793ac3 ≤ v < 235f81045c008169cc4e1955b4a64e118eebe61b, 4.11 | 3f119c37aa293af41400cccb3d89fab8dcf774b0, 4f5f52a5842937f945582a93cb9daed9ea526fee, 326e5cf301d0bec0a672aa834d8254c4f9df6255, d26e80f7fb62d77757b67a1b94e4ac756bc9c658, 235f81045c008169cc4e1955b4a64e118eebe61b |
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