Multiple integer overflows in the (1) _objalloc_alloc function in
objalloc.c and (2) objalloc_alloc macro in include/objalloc.h in GNU
libiberty, as used by binutils 2.22, allow remote attackers to cause a
denial of service (crash) via vectors related to the "addition of
CHUNK_HEADER_SIZE to the length," which triggers a heap-based buffer
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