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

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CVE-2025-38734

Summary (CVE-2025-38734): Affected component is Linux kernel net/smc. The vulnerability stems from a use-after-free risk where newclcsock->sk may be NULL after smc_listen_out_connected() releases smcsk. If a user app closes the accepted socket immediately after accept(), the code path can dere...

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...