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commit d7f399a8de4c55eb841db6493597a587fac002de
Author: Nick Clifton <nickc@redhat.com>
Date: Fri Dec 2 17:46:26 2016 +0000
Fix seg-fault in linker when passed a corrupt binary input file.
PR lf/20908
* elflink.c (bfd_elf_final_link): Check for ELF flavour binaries
when following indirect links.
Upstream-Status: Backport
CVE: CVE-2017-7299
Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
Index: git/bfd/elflink.c
===================================================================
--- git.orig/bfd/elflink.c 2017-09-20 14:15:26.337333504 +0530
+++ git/bfd/elflink.c 2017-09-20 14:20:19.000000000 +0530
@@ -11201,6 +11201,12 @@
asection *sec;
sec = p->u.indirect.section;
+ /* See PR 20908 for a reproducer. */
+ if (bfd_get_flavour (sec->owner) != bfd_target_elf_flavour)
+ {
+ _bfd_error_handler (_("%B: not in ELF format"), sec->owner);
+ goto error_return;
+ }
esdi = elf_section_data (sec);
/* Mark all sections which are to be included in the
Index: git/bfd/ChangeLog
===================================================================
--- git.orig/bfd/ChangeLog 2017-09-20 14:20:19.000000000 +0530
+++ git/bfd/ChangeLog 2017-09-20 14:23:48.743556932 +0530
@@ -192,6 +192,10 @@
2016-12-02 Nick Clifton <nickc@redhat.com>
+ PR lf/20908
+ * elflink.c (bfd_elf_final_link): Check for ELF flavour binaries
+ when following indirect links.
+
PR ld/20909
* aoutx.h (aout_link_add_symbols): Fix off-by-one error in check
for an illegal string offset.
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