FreeChainXenon/binutils-gdb
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fix a potential illegal memory access by objcopy when extracting dwo sections.

Browse source 
PR 26805
 * objcopy.c (is_dwo_section): Check for missing or short section
 names.
This commit is contained in:
Nick Clifton 2020-10-29 11:17:39 +00:00
parent 0ad0e70c73
commit 00c19b8e78
2 changed files with 15 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
binutils/ChangeLog
View file

@ -1,3 +1,9 @@
2020-10-29 Nick Clifton <nickc@redhat.com>
PR 26805
* objcopy.c (is_dwo_section): Check for missing or short section
names.
2020-10-26 Andreas Rammhold <andreas@rammhold.de>
* README-how-to-make-a-release: Use sha256sum instead of md5sum.

11
binutils/objcopy.c
View file

@ -1268,8 +1268,15 @@ group_signature (asection *group)
static bfd_boolean
is_dwo_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
{
const char *name = bfd_section_name (sec);
int len = strlen (name);
const char *name;
int len;
if (sec == NULL || (name = bfd_section_name (sec)) == NULL)
return FALSE;
len = strlen (name);
if (len < 5)
return FALSE;
return strncmp (name + len - 4, ".dwo", 4) == 0;
}