3.0.1
=====
* The x86-64 SIMD functions now use a standard stack frame, prologue, and
epilogue so that debuggers and profilers can reliably capture backtraces from
within the functions.
* Fixed two minor issues in the interblock smoothing algorithm that caused
mathematical (but not necessarily perceptible) edge block errors when
decompressing progressive JPEG images exactly two MCU blocks in width or that
use vertical chrominance subsampling.
* Fixed a regression introduced by 3.0 beta2[6] that, in rare cases, caused
the C Huffman encoder (which is not used by default on x86 and Arm CPUs) to
generate incorrect results if the Neon SIMD extensions were explicitly disabled
at build time (by setting the `WITH_SIMD` CMake variable to `0`) in an AArch64
build of libjpeg-turbo.
3.0.0
=====
* The TurboJPEG API now supports 4:4:1 (transposed 4:1:1) chrominance
subsampling, which allows losslessly transposed or rotated 4:1:1 JPEG images to
be losslessly cropped, partially decompressed, or decompressed to planar YUV
images.
* Fixed various segfaults and buffer overruns (CVE-2023-2804) that occurred
when attempting to decompress various specially-crafted malformed
12-bit-per-component and 16-bit-per-component lossless JPEG images using color
quantization or merged chroma upsampling/color conversion. The underlying
cause of these issues was that the color quantization and merged chroma
upsampling/color conversion algorithms were not designed with lossless
decompression in mind. Since libjpeg-turbo explicitly does not support color
conversion when compressing or decompressing lossless JPEG images, merged
chroma upsampling/color conversion never should have been enabled for such
OBS-URL: https://build.opensuse.org/package/show/graphics/libjpeg-turbo?expand=0&rev=147
Petr Gajdos
5b8774e5c6