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Add range changing to STABS parsing functions, in order to prevent buffer overruns. 

PR 22955
	* stabs.c (parse_number): Add p_end parameter and use it to check
	the validity of the pp parameter.  Add checks to prevent walking
	off the end of the string buffer.
	(parse_stab_string): Likewise.
	(parse_stab_type): Likewise.
	(parse_stab_type_number): Likewise.
	(parse_stab_range_type): Likewise.
	(parse_stab_sun_builtin_type): Likewise.
	(parse_stab_sun_floating_type): Likewise.
	(parse_stab_enum_type): Likewise.
	(parse_stab_struct_type): Likewise.
	(parse_stab_baseclasses): Likewise.
	(parse_stab_struct_fields): Likewise.
	(parse_stab_cpp_abbrev): Likewise.
	(parse_stab_one_struct_field): Likewise.
	(parse_stab_members): Likewise.
	(parse_stab_tilde_field): Likewise.
	(parse_stab_array_type): Likewise.
	* parse_stab: Compute the end of the string and then pass it on to
	individual parser functions.
This commit is contained in:
Nick Clifton 2018-03-13 16:10:45 +00:00
parent 3e33b23945
commit 81db3241f2
2 changed files with 286 additions and 146 deletions
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24
binutils/ChangeLog
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@ -1,3 +1,27 @@
2018-03-13 Nick Clifton <nickc@redhat.com>
PR 22955
* stabs.c (parse_number): Add p_end parameter and use it to check
the validity of the pp parameter. Add checks to prevent walking
off the end of the string buffer.
(parse_stab_string): Likewise.
(parse_stab_type): Likewise.
(parse_stab_type_number): Likewise.
(parse_stab_range_type): Likewise.
(parse_stab_sun_builtin_type): Likewise.
(parse_stab_sun_floating_type): Likewise.
(parse_stab_enum_type): Likewise.
(parse_stab_struct_type): Likewise.
(parse_stab_baseclasses): Likewise.
(parse_stab_struct_fields): Likewise.
(parse_stab_cpp_abbrev): Likewise.
(parse_stab_one_struct_field): Likewise.
(parse_stab_members): Likewise.
(parse_stab_tilde_field): Likewise.
(parse_stab_array_type): Likewise.
* parse_stab: Compute the end of the string and then pass it on to
individual parser functions.
2018-03-07 Paul Pluzhnikov <ppluzhnikov@google.com>
PR binutils/22923

408
binutils/stabs.c
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