Yet another ecoff fuzzed object fix
* ecoff.c (_bfd_ecoff_slurp_symbol_table): Sanity check fdr_ptr
csym against remaining space for symbols. Error on out of bounds
fdr_ptr fields.
diff --git a/bfd/ecoff.c b/bfd/ecoff.c
index c4c2e53..573f52d 100644
--- a/bfd/ecoff.c
+++ b/bfd/ecoff.c
@@ -956,13 +956,19 @@
char *lraw_end;
HDRR *symhdr = &ecoff_data (abfd)->debug_info.symbolic_header;
+ if (fdr_ptr->csym == 0)
+ continue;
if (fdr_ptr->isymBase < 0
|| fdr_ptr->isymBase > symhdr->isymMax
- || fdr_ptr->csym <= 0
- || fdr_ptr->csym > symhdr->isymMax - fdr_ptr->isymBase
+ || fdr_ptr->csym < 0
+ || fdr_ptr->csym > ((long) bfd_get_symcount (abfd)
+ - (internal_ptr - internal))
|| fdr_ptr->issBase < 0
|| fdr_ptr->issBase > symhdr->issMax)
- continue;
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
lraw_src = ((char *) ecoff_data (abfd)->debug_info.external_sym
+ fdr_ptr->isymBase * external_sym_size);
lraw_end = lraw_src + fdr_ptr->csym * external_sym_size;
