binutils: Fix CVE-2024-53589

A buffer overflow vulnerability exists in GNU Binutils’ objdump utility
when processing tekhex format files. The vulnerability occurs in the
Binary File Descriptor (BFD) library’s tekhex parser during format identification.
Specifically, the issue manifests when attempting to read 8 bytes at an address
that precedes the global variable ‘_bfd_std_section’, resulting in an out-of-bounds read.

Backport a patch from upstream to fix CVE-2024-53589.
Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=e0323071916878e0634a6e24d8250e4faff67e88]

Signed-off-by: Yash Shinde <Yash.Shinde@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

diff --git a/meta/recipes-devtools/binutils/binutils-2.42.inc b/meta/recipes-devtools/binutils/binutils-2.42.inc
index bff97b50c3db87194359dfa4e8a6386145306354..41ed39632d5bfbd4822151297c4618883e4e4e82 100644 (file)
--- a/meta/recipes-devtools/binutils/binutils-2.42.inc
+++ b/meta/recipes-devtools/binutils/binutils-2.42.inc
@@ -36,5 +36,6 @@ SRC_URI = "\
      file://0013-Define-alignof-using-_Alignof-when-using-C11-or-newe.patch \
      file://0014-Remove-duplicate-pe-dll.o-entry-deom-targ_extra_ofil.patch \
      file://0015-gprofng-change-use-of-bignum-to-bigint.patch \
+     file://0016-CVE-2024-53589.patch \
 "
 S  = "${WORKDIR}/git"

diff --git a/meta/recipes-devtools/binutils/binutils/0016-CVE-2024-53589.patch b/meta/recipes-devtools/binutils/binutils/0016-CVE-2024-53589.patch
new file mode 100644 (file)
index 0000000..380112a
--- /dev/null
+++ b/meta/recipes-devtools/binutils/binutils/0016-CVE-2024-53589.patch
@@ -0,0 +1,92 @@
+Author: Alan Modra <amodra@gmail.com>
+Date:   Mon Nov 11 10:24:09 2024 +1030
+
+    Re: tekhex object file output fixes
+
+    Commit 8b5a212495 supported *ABS* symbols by allowing "section" to be
+    bfd_abs_section, but bfd_abs_section needs to be treated specially.
+    In particular, bfd_get_next_section_by_name (.., bfd_abs_section_ptr)
+    is invalid.
+
+            PR 32347
+            * tekhex.c (first_phase): Guard against modification of
+            _bfd_std_section[] entries.
+
+Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=e0323071916878e0634a6e24d8250e4faff67e88]
+CVE: CVE-2024-53589
+
+Signed-off-by: Yash Shinde <Yash.Shinde@windriver.com>
+
+diff --git a/bfd/tekhex.c b/bfd/tekhex.c
+index aea2ebb23df..b305c1f96f1 100644
+--- a/bfd/tekhex.c
++++ b/bfd/tekhex.c
+@@ -361,6 +361,7 @@ first_phase (bfd *abfd, int type, char *src, char * src_end)
+ {
+   asection *section, *alt_section;
+   unsigned int len;
++  bfd_vma addr;
+   bfd_vma val;
+   char sym[17];                       /* A symbol can only be 16chars long.  */
+
+@@ -368,20 +369,16 @@ first_phase (bfd *abfd, int type, char *src, char * src_end)
+     {
+     case '6':
+       /* Data record - read it and store it.  */
+-      {
+-      bfd_vma addr;
+-
+-      if (!getvalue (&src, &addr, src_end))
+-        return false;
+-
+-      while (*src && src < src_end - 1)
+-        {
+-          insert_byte (abfd, HEX (src), addr);
+-          src += 2;
+-          addr++;
+-        }
+-      return true;
+-      }
++      if (!getvalue (&src, &addr, src_end))
++       return false;
++
++      while (*src && src < src_end - 1)
++       {
++         insert_byte (abfd, HEX (src), addr);
++         src += 2;
++         addr++;
++       }
++      return true;
+
+     case '3':
+       /* Symbol record, read the segment.  */
+@@ -406,13 +403,16 @@ first_phase (bfd *abfd, int type, char *src, char * src_end)
+           {
+           case '1':           /* Section range.  */
+             src++;
+-            if (!getvalue (&src, &section->vma, src_end))
++             if (!getvalue (&src, &addr, src_end))
+               return false;
+             if (!getvalue (&src, &val, src_end))
+               return false;
+-            if (val < section->vma)
+-              val = section->vma;
+-            section->size = val - section->vma;
++             if (bfd_is_const_section (section))
++               break;
++             section->vma = addr;
++             if (val < addr)
++               val = addr;
++             section->size = val - addr;
+             /* PR 17512: file: objdump-s-endless-loop.tekhex.
+                Check for overlarge section sizes.  */
+             if (section->size & 0x80000000)
+@@ -455,6 +455,8 @@ first_phase (bfd *abfd, int type, char *src, char * src_end)
+                 new_symbol->symbol.flags = BSF_LOCAL;
+               if (stype == '2' || stype == '6')
+                 new_symbol->symbol.section = bfd_abs_section_ptr;
++               else if (bfd_is_const_section (section))
++                 ;
+               else if (stype == '3' || stype == '7')
+                 {
+                   if ((section->flags & SEC_DATA) == 0)