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diff --git a/bfd/elf.c b/bfd/elf.c
index c884d1d..c8ac826 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -608,9 +608,10 @@ setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
if (shdr->contents == NULL)
{
_bfd_error_handler
- (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size);
+ (_("%B: corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size);
bfd_set_error (bfd_error_bad_value);
- return FALSE;
+ -- num_group;
+ continue;
}
memset (shdr->contents, 0, amt);
@@ -618,8 +619,17 @@ setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
|| (bfd_bread (shdr->contents, shdr->sh_size, abfd)
!= shdr->sh_size))
- return FALSE;
-
+ {
+ _bfd_error_handler
+ (_("%B: invalid size field in group section header: 0x%lx"), abfd, shdr->sh_size);
+ bfd_set_error (bfd_error_bad_value);
+ -- num_group;
+ /* PR 17510: If the group contents are even partially
+ corrupt, do not allow any of the contents to be used. */
+ memset (shdr->contents, 0, amt);
+ continue;
+ }
+
/* Translate raw contents, a flag word followed by an
array of elf section indices all in target byte order,
to the flag word followed by an array of elf section
@@ -651,6 +661,21 @@ setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
}
}
}
+
+ /* PR 17510: Corrupt binaries might contain invalid groups. */
+ if (num_group != (unsigned) elf_tdata (abfd)->num_group)
+ {
+ elf_tdata (abfd)->num_group = num_group;
+
+ /* If all groups are invalid then fail. */
+ if (num_group == 0)
+ {
+ elf_tdata (abfd)->group_sect_ptr = NULL;
+ elf_tdata (abfd)->num_group = num_group = -1;
+ (*_bfd_error_handler) (_("%B: no valid group sections found"), abfd);
+ bfd_set_error (bfd_error_bad_value);
+ }
+ }
}
}
@@ -716,6 +741,7 @@ setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
{
(*_bfd_error_handler) (_("%B: no group info for section %A"),
abfd, newsect);
+ return FALSE;
}
return TRUE;
}
--
1.7.1
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