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Diffstat (limited to 'ChangeLog.md')
| -rw-r--r-- | ChangeLog.md | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/ChangeLog.md b/ChangeLog.md index 498b8f27..ca5208be 100644 --- a/ChangeLog.md +++ b/ChangeLog.md @@ -1,3 +1,21 @@ +2.1.1 +===== + +### Significant changes relative to 2.1.0 + +1. Fixed a regression introduced in 2.1.0 that caused build failures with +non-GCC-compatible compilers for Un*x/Arm platforms. + +2. Fixed a regression introduced by 2.1 beta1[13] that prevented the Arm 32-bit +(AArch32) Neon SIMD extensions from building unless the C compiler flags +included `-mfloat-abi=softfp` or `-mfloat-abi=hard`. + +3. Fixed an issue in the AArch32 Neon SIMD Huffman encoder whereby reliance on +undefined C compiler behavior led to crashes ("SIGBUS: illegal alignment") on +Android systems when running AArch32/Thumb builds of libjpeg-turbo built with +recent versions of Clang. + + 2.1.0 ===== @@ -284,15 +302,15 @@ JPEG images. This was known to cause a buffer overflow when attempting to decompress some such images using `tjDecompressToYUV2()` or `tjDecompressToYUVPlanes()`. -5. Fixed an issue, detected by ASan, whereby attempting to losslessly transform -a specially-crafted malformed JPEG image containing an extremely-high-frequency -coefficient block (junk image data that could never be generated by a -legitimate JPEG compressor) could cause the Huffman encoder's local buffer to -be overrun. (Refer to 1.4.0[9] and 1.4beta1[15].) Given that the buffer -overrun was fully contained within the stack and did not cause a segfault or -other user-visible errant behavior, and given that the lossless transformer -(unlike the decompressor) is not generally exposed to arbitrary data exploits, -this issue did not likely pose a security risk. +5. Fixed an issue (CVE-2020-17541), detected by ASan, whereby attempting to +losslessly transform a specially-crafted malformed JPEG image containing an +extremely-high-frequency coefficient block (junk image data that could never be +generated by a legitimate JPEG compressor) could cause the Huffman encoder's +local buffer to be overrun. (Refer to 1.4.0[9] and 1.4beta1[15].) Given that +the buffer overrun was fully contained within the stack and did not cause a +segfault or other user-visible errant behavior, and given that the lossless +transformer (unlike the decompressor) is not generally exposed to arbitrary +data exploits, this issue did not likely pose a security risk. 6. The Arm 64-bit (Armv8) Neon SIMD assembly code now stores constants in a separate read-only data section rather than in the text section, to support |