openbsd 7.9 · errata 046
Fix out of bounds reads and writes as well as info leaks in zlib.
installera
# syspatch
källpatch
signify -Vep /etc/signify/openbsd-79-base.pub -x 046_zlib.patch.sig \
-m - | (cd /usr/src && patch -p0)
And then rebuild and install libz:
cd /usr/src/lib/libz
make obj
make
make install