CVE-2026-23092 iio: dac: ad3552r-hs: fix out-of-bound write in ad3552r_hs_write_data_source

In the Linux kernel, the following vulnerability has been resolved: iio: dac: ad3552r-hs: fix out-of-bound write in ad3552rhswritedatasource When simplewritetobuffer succeeds, it returns the number of bytes actually copied to the buffer. The code incorrectly uses 'count' as the index for null...