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| author | Alan Modra <amodra@gmail.com> | 2018-12-31 15:40:08 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2018-12-31 15:57:39 +1030 |
| commit | 54025d5812ff100f5f0654eb7e1ffd50f2e37f5f (patch) | |
| tree | 040e4fb2ea63c103133d0e94406215f990555349 | |
| parent | c96e057398b599a343cdff68325251346b71594e (diff) | |
| download | binutils-54025d5812ff100f5f0654eb7e1ffd50f2e37f5f.zip binutils-54025d5812ff100f5f0654eb7e1ffd50f2e37f5f.tar.gz binutils-54025d5812ff100f5f0654eb7e1ffd50f2e37f5f.tar.bz2 | |
PR24041, Invalid Memory Address Dereference in elf_link_add_object_symbols
PR 24041
* elflink.c (elf_link_add_object_symbols): Don't segfault on
crafted ET_DYN with no program headers.
| -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 fbdd0c2..370466f 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,11 @@ 2018-12-31 Alan Modra <amodra@gmail.com> + PR 24041 + * elflink.c (elf_link_add_object_symbols): Don't segfault on + crafted ET_DYN with no program headers. + +2018-12-31 Alan Modra <amodra@gmail.com> + * elf64-ppc.c (ppc64_elf_relocate_section <tls_ldgd_opt>): When editing an old-style __tls_get_addr call, replace a toc restore insn with a nop. diff --git a/bfd/elflink.c b/bfd/elflink.c index f5b411b..6e421fb 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -4186,7 +4186,7 @@ error_free_dyn: all sections contained fully therein. This makes relro shared library sections appear as they will at run-time. */ phdr = elf_tdata (abfd)->phdr + elf_elfheader (abfd)->e_phnum; - while (--phdr >= elf_tdata (abfd)->phdr) + while (phdr-- > elf_tdata (abfd)->phdr) if (phdr->p_type == PT_GNU_RELRO) { for (s = abfd->sections; s != NULL; s = s->next) |