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addr2line out of memory on fuzzed file

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Another case of fuzzers finding the section size sanity checks are
avoided with SHT_NOBITS sections.

	* dwarf2.c (read_section): Check that the DWARF section being
	read has contents.
This commit is contained in:
Alan Modra
2023-01-04 21:39:54 +10:30
parent b77a357567
commit efff45b40a
1 changed files with 8 additions and 0 deletions
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8
bfd/dwarf2.c
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@ -705,6 +705,14 @@ read_section (bfd *abfd,
return false; return false;
} }
if ((msec->flags & SEC_HAS_CONTENTS) == 0)
{
_bfd_error_handler (_("DWARF error: section %s has no contents"),
section_name);
bfd_set_error (bfd_error_no_contents);
return false;
}
if (_bfd_section_size_insane (abfd, msec)) if (_bfd_section_size_insane (abfd, msec))
{ {
/* PR 26946 */ /* PR 26946 */