mirror of
https://git.yoctoproject.org/poky
synced 2026-02-07 17:26:36 +01:00
f9998b8ce6
Affects <= 2.30 (From OE-Core rev: 1ff22881249591d64fe61353a4d97ab91dc8efa0) Signed-off-by: Armin Kuster <akuster@mvista.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
62 lines
1.8 KiB
Diff
62 lines
1.8 KiB
Diff
From db0c309f4011ca94a4abc8458e27f3734dab92ac Mon Sep 17 00:00:00 2001
|
|
From: Nick Clifton <nickc@redhat.com>
|
|
Date: Tue, 24 Apr 2018 16:57:04 +0100
|
|
Subject: [PATCH] Fix an illegal memory access when trying to copy an ELF
|
|
binary with corrupt section symbols.
|
|
|
|
PR 23113
|
|
* elf.c (ignore_section_sym): Check for the output_section pointer
|
|
being NULL before dereferencing it.
|
|
|
|
Upstream-Status: Backport
|
|
CVE: CVE-2018-10535
|
|
Signed-off-by: Armin Kuster <akuster@mvista.com>
|
|
|
|
---
|
|
bfd/ChangeLog | 4 ++++
|
|
bfd/elf.c | 9 ++++++++-
|
|
2 files changed, 12 insertions(+), 1 deletion(-)
|
|
|
|
Index: git/bfd/elf.c
|
|
===================================================================
|
|
--- git.orig/bfd/elf.c
|
|
+++ git/bfd/elf.c
|
|
@@ -4021,15 +4021,22 @@ ignore_section_sym (bfd *abfd, asymbol *
|
|
{
|
|
elf_symbol_type *type_ptr;
|
|
|
|
+ if (sym == NULL)
|
|
+ return FALSE;
|
|
+
|
|
if ((sym->flags & BSF_SECTION_SYM) == 0)
|
|
return FALSE;
|
|
|
|
+ if (sym->section == NULL)
|
|
+ return TRUE;
|
|
+
|
|
type_ptr = elf_symbol_from (abfd, sym);
|
|
return ((type_ptr != NULL
|
|
&& type_ptr->internal_elf_sym.st_shndx != 0
|
|
&& bfd_is_abs_section (sym->section))
|
|
|| !(sym->section->owner == abfd
|
|
- || (sym->section->output_section->owner == abfd
|
|
+ || (sym->section->output_section != NULL
|
|
+ && sym->section->output_section->owner == abfd
|
|
&& sym->section->output_offset == 0)
|
|
|| bfd_is_abs_section (sym->section)));
|
|
}
|
|
Index: git/bfd/ChangeLog
|
|
===================================================================
|
|
--- git.orig/bfd/ChangeLog
|
|
+++ git/bfd/ChangeLog
|
|
@@ -1,3 +1,9 @@
|
|
+2018-04-24 Nick Clifton <nickc@redhat.com>
|
|
+
|
|
+ PR 23113
|
|
+ * elf.c (ignore_section_sym): Check for the output_section pointer
|
|
+ being NULL before dereferencing it.
|
|
+
|
|
2018-04-17 Nick Clifton <nickc@redhat.com>
|
|
|
|
PR 23065
|