Fix readelf's decoding of files with no sections. (#2131609)

binutils-readelf-no-sections.patch

@@ -0,0 +1,29 @@
+--- binutils.orig/binutils/readelf.c	2022-10-03 13:20:42.707527855 +0100
++++ binutils-2.39/binutils/readelf.c	2022-10-03 13:21:25.785436781 +0100
+@@ -6357,6 +6357,13 @@ get_32bit_section_headers (Filedata * fi
+   /* PR binutils/17531: Cope with unexpected section header sizes.  */
+   if (size == 0 || num == 0)
+     return false;
++
++  /* The section header cannot be at the start of the file - that is
++     where the ELF file header is located.  A file with absolutely no
++     sections in it will use a shoff of 0.  */
++  if (filedata->file_header.e_shoff == 0)
++    return false;
++
+   if (size < sizeof * shdrs)
+     {
+       if (! probe)
+@@ -6421,6 +6428,12 @@ get_64bit_section_headers (Filedata * fi
+   if (size == 0 || num == 0)
+     return false;
+ 
++  /* The section header cannot be at the start of the file - that is
++     where the ELF file header is located.  A file with absolutely no
++     sections in it will use a shoff of 0.  */
++  if (filedata->file_header.e_shoff == 0)
++    return false;
++
+   if (size < sizeof * shdrs)
+     {
+       if (! probe)

binutils.spec

@@ -39,7 +39,7 @@
 Summary: A GNU collection of binary utilities
 Name: binutils%{?name_cross}%{?_with_debug:-debug}
 Version: 2.39
-Release: 3%{?dist}
+Release: 4%{?dist}
 License: GPLv3+
 URL: https://sourceware.org/binutils
 
@@ -303,6 +303,10 @@ Patch20: binutils-gas-dwarf-skip-empty-functions.patch
 # Lifetime: Fixed in 2.40
 Patch21: binutils-CVE-38128-dwarf-abbrev-parsing.patch
 
+# Purpose:  Stop readelf from incorrectly decoding ELF files with no sections.
+# Lifetime: Fixed in 2.40
+Patch22: binutils-readelf-no-sections.patch
+
 #----------------------------------------------------------------------------
 
 Provides: bundled(libiberty)
@@ -959,6 +963,9 @@ exit 0
 
 #----------------------------------------------------------------------------
 %changelog
+* Mon Oct 03 2022 Nick Clifton  <nickc@redhat.com> - 2.39-4
+- Fix readelf's decoding of files with no sections.  (#2131609)
+
 * Wed Aug 31 2022 Nick Clifton  <nickc@redhat.com> - 2.39-3
 - Stop a potential infinite loop in the binutils DWARF parser.  (#2122675)