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PR23804, buffer overflow in sec_merge_hash_lookup

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PR 23804
	* merge.c (_bfd_add_merge_section): Don't attempt to merge
	sections where size is not a multiple of entsize.
This commit is contained in:
Alan Modra 2018-10-23 18:29:24 +10:30
parent 8e3152af14
commit ab419ddbb2
2 changed files with 9 additions and 0 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2018-10-23 Alan Modra <amodra@gmail.com>
PR 23804
* merge.c (_bfd_add_merge_section): Don't attempt to merge
sections where size is not a multiple of entsize.
2018-10-20 Alan Modra <amodra@gmail.com> 2018-10-20 Alan Modra <amodra@gmail.com>
PR 23788 PR 23788

3
bfd/merge.c
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@ -376,6 +376,9 @@ _bfd_add_merge_section (bfd *abfd, void **psinfo, asection *sec,
|| sec->entsize == 0) || sec->entsize == 0)
return TRUE; return TRUE;
if (sec->size % sec->entsize != 0)
return TRUE;
if ((sec->flags & SEC_RELOC) != 0) if ((sec->flags & SEC_RELOC) != 0)
{ {
/* We aren't prepared to handle relocations in merged sections. */ /* We aren't prepared to handle relocations in merged sections. */