In the Linux kernel, the following vulnerability has been resolved: smc: Use _skdstget() and dstdevrcu() in smcclcprfxmatch(). smcclcprfxmatch() is called from smclistenwork() and not under RCU nor RTNL. Using skdstget(sk)->dev could trigger UAF. Let's use _skdstget() and dstdevrcu(). Note that the returned value of smcclcprfx_match() is not used in the caller.