net/smc: fix UAF on smcsk after smc_listen_out()

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CVE-2025-38734

CVE-2025-38734 is a Linux kernel vulnerability in net/smc causing a use-after-free when smc_listen_out_connected releases smcsk and leaves newclcsock->sk possibly NULL. The root cause is a race where, after accept() and immediate close, the socket’s sk is NULL, leading to a NULL dereference. T...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that originates from the post-release reuse of smcsk after smclistenout in net/smc...