CVE-2021-47385

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field<br /> <br /> If driver read val value sufficient for<br /> (val &amp; 0x08) &amp;&amp; (!(val &amp; 0x80)) &amp;&amp; ((val &amp; 0x7) == ((val &gt;&gt; 4) &amp; 0x7))<br /> from device then Null pointer dereference occurs.<br /> (It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)<br /> Also lm75[] does not serve a purpose anymore after switching to<br /> devm_i2c_new_dummy_device() in w83791d_detect_subclients().<br /> <br /> The patch fixes possible NULL pointer dereference by removing lm75[].<br /> <br /> Found by Linux Driver Verification project (linuxtesting.org).<br /> <br /> [groeck: Dropped unnecessary continuation lines, fixed multipline alignment]