tree 2ab31d696610797b6913cce701a71e70eb19a6a7
parent 16f2c753f9959e8d7c7e1fa771b8ccc5821427aa
author Albert Astals Cid <aacid@kde.org> 1559064918 +0200
committer Mark Wielaard <mark@klomp.org> 1561383245 +0200

Make sure nSelectors is not out of range

nSelectors is used in a loop from 0 to nSelectors to access selectorMtf
which is
	UChar    selectorMtf[BZ_MAX_SELECTORS];
so if nSelectors is bigger than BZ_MAX_SELECTORS it'll do an invalid memory
access

Fixes out of bounds access discovered while fuzzying karchive

This was reported as CVE-2019-12900
BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an
out-of-bounds write when there are many selectors.