1 files changed, 57 insertions, 0 deletions

diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2022-47695.patch b/meta/recipes-devtools/binutils/binutils/CVE-2022-47695.patch
new file mode 100644
index 0000000000..101a4cdb4e
--- /dev/null
+++ b/meta/recipes-devtools/binutils/binutils/CVE-2022-47695.patch
@@ -0,0 +1,57 @@
+From 3d3af4ba39e892b1c544d667ca241846bc3df386 Mon Sep 17 00:00:00 2001
+From: Alan Modra <amodra@gmail.com>
+Date: Sun, 4 Dec 2022 22:15:40 +1030
+Subject: [PATCH] PR29846, segmentation fault in objdump.c compare_symbols
+
+Fixes a fuzzed object file problem where plt relocs were manipulated
+in such a way that two synthetic symbols were generated at the same
+plt location.  Won't occur in real object files.
+
+        PR 29846
+        PR 20337
+        * objdump.c (compare_symbols): Test symbol flags to exclude
+        section and synthetic symbols before attempting to check flavour.
+Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=3d3af4ba39e892b1c544d667ca241846bc3df386]
+CVE: CVE-2022-47695
+Signed-off-by: Virendra Thakur <virendrak@kpit.com>
+Comment: Patch refreshed based on codebase.
+---
+ binutils/objdump.c | 23 ++++++++++-------------
+ 1 file changed, 10 insertions(+), 13 deletions(-)
+
+diff --git a/binutils/objdump.c b/binutils/objdump.c
+index e8481b2d928..d95c8b68bf0 100644
+--- a/binutils/objdump.c
++++ b/binutils/objdump.c
+@@ -935,20 +935,17 @@
+        return 1;
+     }
+ 
+-  if (bfd_get_flavour (bfd_asymbol_bfd (a)) == bfd_target_elf_flavour
++  /* Sort larger size ELF symbols before smaller.  See PR20337.  */
++  bfd_vma asz = 0;
++  if ((a->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0
++      && bfd_get_flavour (bfd_asymbol_bfd (a)) == bfd_target_elf_flavour)
++    asz = ((elf_symbol_type *) a)->internal_elf_sym.st_size;
++  bfd_vma bsz = 0;
++  if ((b->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0
+       && bfd_get_flavour (bfd_asymbol_bfd (b)) == bfd_target_elf_flavour)
+-    {
+-      bfd_vma asz, bsz;
+-
+-      asz = 0;
+-      if ((a->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
+-       asz = ((elf_symbol_type *) a)->internal_elf_sym.st_size;
+-      bsz = 0;
+-      if ((b->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
+-       bsz = ((elf_symbol_type *) b)->internal_elf_sym.st_size;
+-      if (asz != bsz)
+-       return asz > bsz ? -1 : 1;
+-    }
++    bsz = ((elf_symbol_type *) b)->internal_elf_sym.st_size;
++  if (asz != bsz)
++    return asz > bsz ? -1 : 1;
+ 
+   /* Symbols that start with '.' might be section names, so sort them
+      after symbols that don't start with '.'.  */
+