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| author | Alan Modra <amodra@gmail.com> | 2023-01-04 21:39:54 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2023-01-04 23:52:26 +1030 |
| commit | efff45b40a10ab0b3bdc16c3f20cf4af3f6dea88 (patch) | |
| tree | 3861e6700970db7d9e2971f235af6018efaab7d8 | |
| parent | b77a357567b8640003a7301b1bd50bd81fd7a26a (diff) | |
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addr2line out of memory on fuzzed file
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.
| -rw-r--r-- | bfd/dwarf2.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c index 6eb6e04..f689eeb 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 */ |