Commit Graph

5 Commits

Author SHA1 Message Date
Petr Štetiar
7561eab8e8 zlib: backport fix for heap-based buffer over-read (CVE-2022-37434)
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow
in inflate in inflate.c via a large gzip header extra field. NOTE: only
applications that call inflateGetHeader are affected. Some common
applications bundle the affected zlib source code but may be unable to
call inflateGetHeader.

Fixes: CVE-2022-37434
References: https://github.com/ivd38/zlib_overflow
Signed-off-by: Petr Štetiar <ynezz@true.cz>
(cherry picked from commit 7df6795d4c)
2022-08-08 09:46:36 +02:00
Petr Štetiar
3965dda0fa zlib: backport security fix for a reproducible crash in compressor
Tavis has just reported, that he was recently trying to track down a
reproducible crash in a compressor. Believe it or not, it really was a
bug in zlib-1.2.11 when compressing (not decompressing!) certain inputs.

Tavis has reported it upstream, but it turns out the issue has been
public since 2018, but the patch never made it into a release. As far as
he knows, nobody ever assigned it a CVE.

Suggested-by: Tavis Ormandy <taviso@gmail.com>
References: https://www.openwall.com/lists/oss-security/2022/03/24/1
Signed-off-by: Petr Štetiar <ynezz@true.cz>
(cherry picked from commit b3aa2909a7)
2022-03-24 08:18:21 +01:00
Adrian Schmutzler
221eefaf6b zlib: properly split patches
This package had two patches (with two headers etc.) in one file,
which would have quilt merging them during a refresh.

Separate these patches into two files, as the original intent seems
to be having them separate.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2021-02-24 14:08:29 +01:00
Jeffery To
782eda9750 zlib: Use relative paths in pkg-config metadata file
The buildroot pkg-config (in staging_dir/host/bin) overrides the prefix
and exec_prefix variables in *.pc files, to supply the correct
(buildroot) paths for callers. If other variables are not defined
relative to prefix and exec_prefix, then the returned values will be
incorrect.

The default zlib.pc file generated by cmake contains absolute paths.
This patches the file to use relative paths (relative to ${prefix} and
${exec_prefix}).

Signed-off-by: Jeffery To <jeffery.to@gmail.com>
2019-05-17 21:41:43 +02:00
Daniel Engberg
3acecba520 package/libs/zlib: Add ARM and NEON optimizations
This adds two optimizations for ARM:
NEON optimized Adler(-)32 checksum algorithm (ARMv7 and newer NEON CPUs)
ARM(v7+) specific optimization for inflate
I've also connected inflate optimization to the build using the following
source as template.
0397489124 (diff-a62ad2db6c83dbc205d34bb9a8884f16)

Additional info:
https://codereview.chromium.org/2676493007/
https://codereview.chromium.org/2722063002/

Sources:
https://github.com/madler/zlib/pull/251 (only the first commit)
https://github.com/madler/zlib/pull/256

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>
2018-01-02 17:11:12 +01:00