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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.
Runtime tested on ipq40xx/glinet-b1300 and mvebu/turris-omnia.
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 b3aa2909a79aeff20d594160b207a89dc807c033)
(cherry picked from commit 3965dda0fa70dc9408f1a2e55a3ddefde78bd50e)
(cherry picked from commit f65edc9b990c2bcc10c9e9fca29253adc6fe316d)
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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>
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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.
https://github.com/mirror/chromium/commit/0397489124ce7e6aced020f8b85f5034c7d5f49b#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>
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