* addr2line out of memory on fuzzed file
@ 2023-01-04 13:25 Alan Modra
0 siblings, 0 replies; only message in thread
From: Alan Modra @ 2023-01-04 13:25 UTC (permalink / raw)
To: binutils
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.
diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
index 6eb6e04e6e5..f689eebbd88 100644
--- a/bfd/dwarf2.c
+++ b/bfd/dwarf2.c
@@ -705,6 +705,14 @@ read_section (bfd *abfd,
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))
{
/* PR 26946 */
--
Alan Modra
Australia Development Lab, IBM
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