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Fix potential illegal memory access when parsing a corrupt PEF format file.

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PR 25307
	(bfd_pef_parse_function_stubs): Correct the test that ensures that
	there is enough data remaining in the code buffer before
	attempting to read a function stub.
This commit is contained in:
Nick Clifton
2020-01-03 16:17:53 +00:00
parent 7a0fb7be96
commit f2a3559d54
2 changed files with 8 additions and 1 deletions

7
bfd/ChangeLog

@ -1,3 +1,10 @@
2020-01-03 Nick Clifton <nickc@redhat.com>
PR 25307
(bfd_pef_parse_function_stubs): Correct the test that ensures that
there is enough data remaining in the code buffer before
attempting to read a function stub.
2020-01-03 Nick Clifton <nickc@redhat.com> 2020-01-03 Nick Clifton <nickc@redhat.com>
PR 25308 PR 25308

2
bfd/pef.c

@ -806,7 +806,7 @@ bfd_pef_parse_function_stubs (bfd *abfd,
codepos += 4; codepos += 4;
} }
if ((codepos + 4) > codelen) if ((codepos + 24) > codelen)
break; break;
ret = bfd_pef_parse_function_stub (abfd, codebuf + codepos, 24, &sym_index); ret = bfd_pef_parse_function_stub (abfd, codebuf + codepos, 24, &sym_index);