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Fix a seg-fault in the ELF note parser when a note with an excessively large alignment is encountered.

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PR 22788
	* elf.c (elf_parse_notes): Reject notes with excessuively large
	alignments.
This commit is contained in:
Nick Clifton
2018-02-08 10:28:25 +00:00
parent a9479dc051
commit ef135d4314
2 changed files with 8 additions and 0 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2018-02-08 Nick Clifton <nickc@redhat.com>
PR 22788
* elf.c (elf_parse_notes): Reject notes with excessuively large
alignments.
2018-02-07 Alan Modra <amodra@gmail.com> 2018-02-07 Alan Modra <amodra@gmail.com>
Revert 2018-01-17 Alan Modra <amodra@gmail.com> Revert 2018-01-17 Alan Modra <amodra@gmail.com>

2
bfd/elf.c
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@ -11012,6 +11012,8 @@ elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset,
align is less than 4, we use 4 byte alignment. */ align is less than 4, we use 4 byte alignment. */
if (align < 4) if (align < 4)
align = 4; align = 4;
if (align != 4 && align != 8)
return FALSE;
p = buf; p = buf;
while (p < buf + size) while (p < buf + size)