CVE-2023-53077

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes<br /> <br /> [WHY]<br /> When PTEBufferSizeInRequests is zero, UBSAN reports the following<br /> warning because dml_log2 returns an unexpected negative value:<br /> <br /> shift exponent 4294966273 is too large for 32-bit type &amp;#39;int&amp;#39;<br /> <br /> [HOW]<br /> <br /> In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and<br /> assign the result directly.