scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

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In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() In iscsit_dec_conn_usage_count(), the function calls complete() while holding the conn->conn_usage_lock. As soon as complete() is invoked, the waiter (such as iscsit_close_connection()) may wake up and proceed to free the iscsit_conn structure. If the waiter frees the memory before the current thread reaches spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function attempts to release a lock within the already-freed connection structure. Fix this by releasing the spinlock before calling complete().

Source published

18 Feb 2026 14:21:53 UTC

Source modified

19 Oct 2026 18:35:39 UTC

Observed here

23 Oct 2026 15:48:27 UTC

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