CVE-2026-87039 I2S configure syscall handler passes an unvalidated user-supplied kernel object pointer to drivers

The user-mode syscall verifier zvrfyi2sconfigure in drivers/i2s/i2shandlers.c copies the caller's struct i2sconfig in from user memory and then, when cfg-frameclkfreq is 0 the API's "unconfigure the stream" request, jumps straight to zimpli2sconfigure without performing the...