diff options
| author | Mark Wielaard <[email protected]> | 2014-12-12 16:43:04 +0100 |
|---|---|---|
| committer | Mark Wielaard <[email protected]> | 2014-12-17 16:35:56 +0100 |
| commit | 9202665816763fad8524dd78a664dbcaa157b8d4 (patch) | |
| tree | a895bade664b2701de624f57d5c79a69ebcd7004 /libdw/dwarf_getattrs.c | |
| parent | 274cbda6f5d5b7c57d488edaeb55876ba8705db3 (diff) | |
libdw: Make sure all attributes come with a (fake) CU for bound checks.
All attributes now have a reference to a (fake) CU that has startp and
endp set to the data section where the form data comes from. Use that
for bounds checking in __libdw_form_val_len and dwarf_formblock to make
sure data read doesn't overflow any data section. Remove libdwP.h cu_data
and use cu startp and endp directly where appropriate.
Signed-off-by: Mark Wielaard <[email protected]>
Diffstat (limited to 'libdw/dwarf_getattrs.c')
| -rw-r--r-- | libdw/dwarf_getattrs.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/libdw/dwarf_getattrs.c b/libdw/dwarf_getattrs.c index 9ea70fca..0c54e5d0 100644 --- a/libdw/dwarf_getattrs.c +++ b/libdw/dwarf_getattrs.c @@ -106,9 +106,7 @@ dwarf_getattrs (Dwarf_Die *die, int (*callback) (Dwarf_Attribute *, void *), /* Skip over the rest of this attribute (if there is any). */ if (attr.form != 0) { - size_t len = __libdw_form_val_len (dbg, die->cu, attr.form, - die_addr, endp); - + size_t len = __libdw_form_val_len (die->cu, attr.form, die_addr); if (unlikely (len == (size_t) -1l)) /* Something wrong with the file. */ return -1l; |