Projects / zlib / Releases / 1.2.3

Version 1.2.3 of zlib

Release Notes: A potential security vulnerability when decoding invalid compressed data was eliminated. A potential security vulnerability when decoding specially crafted compressed data was eliminated. A bug when decompressing dynamic blocks with no distance codes was fixed. A CRC check bug in gzread() after gzungetc() was fixed. An error is no longer returned when using gzread() on an empty file.

Other releases

Release Notes: Many portability improvements have been made. A bug in gzclose_w() when gzwrite() failed to allocate memory has been fixed. Support for "x" (O_EXCL) and "e" (O_CLOEXEC) modes has been added to gzopen(). A type mismatch between get_crc_table() and crc_table has been fixed. Many other changes have been made.

Release Notes: Many minor bugfixes and enhancements were made.

Release Notes: Bugs were fixed in adler32_combine(), compressBound(), and deflateBound(). The gz functions were replaced with faster versions and gzbuffer(), gzoffset(), gzclose_r(), and gzclose_w() functions were added. Faster Z_HUFFMAN_ONLY and Z_RLE compression was introduced for images and other specialized compression. A Z_BLOCK flush option was added to deflate() along with a Z_TREES flush option for inflate(). inflateReset2() and inflateMark() functions were added, the latter to aid in random access applications. Many portability improvements were made. Examples and contribs were updated.

  •  14 Oct 2005 01:28

Release Notes: A potential security vulnerability when decoding invalid compressed data was eliminated. A potential security vulnerability when decoding specially crafted compressed data was eliminated. A bug when decompressing dynamic blocks with no distance codes was fixed. A CRC check bug in gzread() after gzungetc() was fixed. An error is no longer returned when using gzread() on an empty file.

  •  11 Jul 2005 16:37

Release Notes: This release eliminates a potential security vulnerability in 1.2.1, so all users of 1.2.1 should upgrade immediately. It eliminates a potential security vulnerability when decoding invalid compressed data, fixes a bug when decompressing dynamic blocks with no distance codes, and does not return an error when using gzread() on an empty file.

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