Fix a potential illegal memory access parsing a COFF format file. (#2033716)

This commit is contained in:
Nick Clifton 2021-12-20 14:58:26 +00:00
parent 3f8fde082b
commit e38a1643f1
2 changed files with 238 additions and 1 deletions

View File

@ -0,0 +1,230 @@
--- binutils.orig/binutils/stabs.c 2021-12-20 12:51:40.953113439 +0000
+++ binutils-2.37/binutils/stabs.c 2021-12-20 12:56:07.607348945 +0000
@@ -202,7 +202,7 @@ static debug_type stab_find_type (void *
static bool stab_record_type
(void *, struct stab_handle *, const int *, debug_type);
static debug_type stab_xcoff_builtin_type
- (void *, struct stab_handle *, int);
+ (void *, struct stab_handle *, unsigned int);
static debug_type stab_find_tagged_type
(void *, struct stab_handle *, const char *, int, enum debug_type_kind);
static debug_type *stab_demangle_argtypes
@@ -3496,166 +3496,167 @@ stab_record_type (void *dhandle ATTRIBUT
static debug_type
stab_xcoff_builtin_type (void *dhandle, struct stab_handle *info,
- int typenum)
+ unsigned int typenum)
{
debug_type rettype;
const char *name;
- if (typenum >= 0 || typenum < -XCOFF_TYPE_COUNT)
+ typenum = -typenum - 1;
+ if (typenum >= XCOFF_TYPE_COUNT)
{
- fprintf (stderr, _("Unrecognized XCOFF type %d\n"), typenum);
+ fprintf (stderr, _("Unrecognized XCOFF type %d\n"), -typenum - 1);
return DEBUG_TYPE_NULL;
}
- if (info->xcoff_types[-typenum] != NULL)
- return info->xcoff_types[-typenum];
+ if (info->xcoff_types[typenum] != NULL)
+ return info->xcoff_types[typenum];
- switch (-typenum)
+ switch (typenum)
{
- case 1:
+ case 0:
/* The size of this and all the other types are fixed, defined
by the debugging format. */
name = "int";
rettype = debug_make_int_type (dhandle, 4, false);
break;
- case 2:
+ case 1:
name = "char";
rettype = debug_make_int_type (dhandle, 1, false);
break;
- case 3:
+ case 2:
name = "short";
rettype = debug_make_int_type (dhandle, 2, false);
break;
- case 4:
+ case 3:
name = "long";
rettype = debug_make_int_type (dhandle, 4, false);
break;
- case 5:
+ case 4:
name = "unsigned char";
rettype = debug_make_int_type (dhandle, 1, true);
break;
- case 6:
+ case 5:
name = "signed char";
rettype = debug_make_int_type (dhandle, 1, false);
break;
- case 7:
+ case 6:
name = "unsigned short";
rettype = debug_make_int_type (dhandle, 2, true);
break;
- case 8:
+ case 7:
name = "unsigned int";
rettype = debug_make_int_type (dhandle, 4, true);
break;
- case 9:
+ case 8:
name = "unsigned";
rettype = debug_make_int_type (dhandle, 4, true);
break;
- case 10:
+ case 9:
name = "unsigned long";
rettype = debug_make_int_type (dhandle, 4, true);
break;
- case 11:
+ case 10:
name = "void";
rettype = debug_make_void_type (dhandle);
break;
- case 12:
+ case 11:
/* IEEE single precision (32 bit). */
name = "float";
rettype = debug_make_float_type (dhandle, 4);
break;
- case 13:
+ case 12:
/* IEEE double precision (64 bit). */
name = "double";
rettype = debug_make_float_type (dhandle, 8);
break;
- case 14:
+ case 13:
/* This is an IEEE double on the RS/6000, and different machines
with different sizes for "long double" should use different
negative type numbers. See stabs.texinfo. */
name = "long double";
rettype = debug_make_float_type (dhandle, 8);
break;
- case 15:
+ case 14:
name = "integer";
rettype = debug_make_int_type (dhandle, 4, false);
break;
- case 16:
+ case 15:
name = "boolean";
rettype = debug_make_bool_type (dhandle, 4);
break;
- case 17:
+ case 16:
name = "short real";
rettype = debug_make_float_type (dhandle, 4);
break;
- case 18:
+ case 17:
name = "real";
rettype = debug_make_float_type (dhandle, 8);
break;
- case 19:
+ case 18:
/* FIXME */
name = "stringptr";
rettype = NULL;
break;
- case 20:
+ case 19:
/* FIXME */
name = "character";
rettype = debug_make_int_type (dhandle, 1, true);
break;
- case 21:
+ case 20:
name = "logical*1";
rettype = debug_make_bool_type (dhandle, 1);
break;
- case 22:
+ case 21:
name = "logical*2";
rettype = debug_make_bool_type (dhandle, 2);
break;
- case 23:
+ case 22:
name = "logical*4";
rettype = debug_make_bool_type (dhandle, 4);
break;
- case 24:
+ case 23:
name = "logical";
rettype = debug_make_bool_type (dhandle, 4);
break;
- case 25:
+ case 24:
/* Complex type consisting of two IEEE single precision values. */
name = "complex";
rettype = debug_make_complex_type (dhandle, 8);
break;
- case 26:
+ case 25:
/* Complex type consisting of two IEEE double precision values. */
name = "double complex";
rettype = debug_make_complex_type (dhandle, 16);
break;
- case 27:
+ case 26:
name = "integer*1";
rettype = debug_make_int_type (dhandle, 1, false);
break;
- case 28:
+ case 27:
name = "integer*2";
rettype = debug_make_int_type (dhandle, 2, false);
break;
- case 29:
+ case 28:
name = "integer*4";
rettype = debug_make_int_type (dhandle, 4, false);
break;
- case 30:
+ case 29:
/* FIXME */
name = "wchar";
rettype = debug_make_int_type (dhandle, 2, false);
break;
- case 31:
+ case 30:
name = "long long";
rettype = debug_make_int_type (dhandle, 8, false);
break;
- case 32:
+ case 31:
name = "unsigned long long";
rettype = debug_make_int_type (dhandle, 8, true);
break;
- case 33:
+ case 32:
name = "logical*8";
rettype = debug_make_bool_type (dhandle, 8);
break;
- case 34:
+ case 33:
name = "integer*8";
rettype = debug_make_int_type (dhandle, 8, false);
break;
@@ -3664,9 +3665,7 @@ stab_xcoff_builtin_type (void *dhandle,
}
rettype = debug_name_type (dhandle, name, rettype);
-
- info->xcoff_types[-typenum] = rettype;
-
+ info->xcoff_types[typenum] = rettype;
return rettype;
}

View File

@ -39,7 +39,7 @@
Summary: A GNU collection of binary utilities Summary: A GNU collection of binary utilities
Name: binutils%{?name_cross}%{?_with_debug:-debug} Name: binutils%{?name_cross}%{?_with_debug:-debug}
Version: 2.37 Version: 2.37
Release: 14%{?dist} Release: 15%{?dist}
License: GPLv3+ License: GPLv3+
URL: https://sourceware.org/binutils URL: https://sourceware.org/binutils
@ -303,6 +303,10 @@ Patch23: binutils-gas-multibyte-warnings.patch
# Lifetime: Fixed in 2.38. # Lifetime: Fixed in 2.38.
Patch24: binutils-AArch64-EFI.patch Patch24: binutils-AArch64-EFI.patch
# Purpose: Fix a potential illegal memory access parsing a corrupt COFF file.
# Lifetime: Fixed in 2.38.
Patch25: binutils-CVE-2021-45078.patch
#---------------------------------------------------------------------------- #----------------------------------------------------------------------------
Provides: bundled(libiberty) Provides: bundled(libiberty)
@ -920,6 +924,9 @@ exit 0
#---------------------------------------------------------------------------- #----------------------------------------------------------------------------
%changelog %changelog
* Mon Dec 20 2021 Nick Clifton <nickc@redhat.comn> - 2.37-15
- Fix a potential illegal memory access parsing a COFF format file. (#2033716)
* Wed Dec 01 2021 Nick Clifton <nickc@redhat.com> - 2.37-14 * Wed Dec 01 2021 Nick Clifton <nickc@redhat.com> - 2.37-14
- Add support for the EFI format to the AArch64 target. (#2027515) - Add support for the EFI format to the AArch64 target. (#2027515)