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| author | Alan Modra <amodra@gmail.com> | 2019-04-11 19:42:31 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2019-04-11 20:57:09 +0930 |
| commit | 9bff840e8cc560f5096a43609ed3e0d980733fd9 (patch) | |
| tree | c94d7d80f89988d7d835301dc64d87797a6b0bf4 | |
| parent | ce12121b63145322b4961bbb2b94b939cb916ba7 (diff) | |
| download | gdb-9bff840e8cc560f5096a43609ed3e0d980733fd9.zip gdb-9bff840e8cc560f5096a43609ed3e0d980733fd9.tar.gz gdb-9bff840e8cc560f5096a43609ed3e0d980733fd9.tar.bz2 | |
PR24435, buffer overflow reading dynamic entries
PR 24435
* elflink.c (elf_link_add_object_symbols): Don't read partial
dynamic entries from fuzzed objects.
| -rw-r--r-- | bfd/ChangeLog | 6 | ||||
| -rw-r--r-- | bfd/elflink.c | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 022e7c3..a3cdfc6 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,9 @@ +2019-04-11 Alan Modra <amodra@gmail.com> + + PR 24435 + * elflink.c (elf_link_add_object_symbols): Don't read partial + dynamic entries from fuzzed objects. + 2019-04-11 Tamar Christina <tamar.christina@arm.com> PR ld/24302 diff --git a/bfd/elflink.c b/bfd/elflink.c index c796e27..8aae980 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -4076,7 +4076,7 @@ error_free_dyn: shlink = elf_elfsections (abfd)[elfsec]->sh_link; for (extdyn = dynbuf; - extdyn < dynbuf + s->size; + extdyn <= dynbuf + s->size - bed->s->sizeof_dyn; extdyn += bed->s->sizeof_dyn) { Elf_Internal_Dyn dyn; |