#include "safe-ctype.h"
#include "filenames.h"
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((size_t) &(((TYPE *) 0)->MEMBER))
+#endif
+
char * program_name = "readelf";
static long archive_file_offset;
static unsigned long archive_file_size;
#define CHECK_ENTSIZE_VALUES(section, i, size32, size64) \
do \
{ \
- size_t expected_entsize \
- = is_32bit_elf ? size32 : size64; \
+ bfd_size_type expected_entsize = is_32bit_elf ? size32 : size64; \
if (section->sh_entsize != expected_entsize) \
- error (_("Section %d has invalid sh_entsize %lx (expected %lx)\n"), \
- i, (unsigned long int) section->sh_entsize, \
- (unsigned long int) expected_entsize); \
- section->sh_entsize = expected_entsize; \
+ { \
+ error (_("Section %d has invalid sh_entsize of %" BFD_VMA_FMT "x\n"), \
+ i, section->sh_entsize); \
+ error (_("(Using the expected size of %d for the rest of this dump)\n"), \
+ (int) expected_entsize); \
+ section->sh_entsize = expected_entsize; \
+ } \
} \
while (0)
-#define CHECK_ENTSIZE(section, i, type) \
+
+#define CHECK_ENTSIZE(section, i, type) \
CHECK_ENTSIZE_VALUES (section, i, sizeof (Elf32_External_##type), \
sizeof (Elf64_External_##type))
return 0;
pnotes = (Elf_External_Note *) get_data (NULL, file, offset, 1, length,
- _("notes"));
+ _("notes"));
if (pnotes == NULL)
return 0;
external = pnotes;
- printf (_("\nNotes at offset 0x%08lx with length 0x%08lx:\n"),
+ printf (_("\nDisplaying notes found at file offset 0x%08lx with length 0x%08lx:\n"),
(unsigned long) offset, (unsigned long) length);
printf (_(" %-20s %10s\tDescription\n"), _("Owner"), _("Data size"));
- while (external < (Elf_External_Note *) ((char *) pnotes + length))
+ while ((char *) external < (char *) pnotes + length)
{
- Elf_External_Note * next;
Elf_Internal_Note inote;
+ size_t min_notesz;
+ char *next;
char * temp = NULL;
+ size_t data_remaining = ((char *) pnotes + length) - (char *) external;
if (!is_ia64_vms ())
- {
- inote.type = BYTE_GET (external->type);
- inote.namesz = BYTE_GET (external->namesz);
- inote.namedata = external->name;
- inote.descsz = BYTE_GET (external->descsz);
- inote.descdata = inote.namedata + align_power (inote.namesz, 2);
- inote.descpos = offset + (inote.descdata - (char *) pnotes);
-
- next = (Elf_External_Note *) (inote.descdata + align_power (inote.descsz, 2));
- }
+ {
+ /* PR binutils/15191
+ Make sure that there is enough data to read. */
+ min_notesz = offsetof (Elf_External_Note, name);
+ if (data_remaining < min_notesz)
+ {
+ warn (_("Corrupt note: only %d bytes remain, not enough for a full note\n"),
+ (int) data_remaining);
+ break;
+ }
+ inote.type = BYTE_GET (external->type);
+ inote.namesz = BYTE_GET (external->namesz);
+ inote.namedata = external->name;
+ inote.descsz = BYTE_GET (external->descsz);
+ inote.descdata = inote.namedata + align_power (inote.namesz, 2);
+ inote.descpos = offset + (inote.descdata - (char *) pnotes);
+ next = inote.descdata + align_power (inote.descsz, 2);
+ }
else
- {
- Elf64_External_VMS_Note *vms_external;
-
- vms_external = (Elf64_External_VMS_Note *)external;
- inote.type = BYTE_GET (vms_external->type);
- inote.namesz = BYTE_GET (vms_external->namesz);
- inote.namedata = vms_external->name;
- inote.descsz = BYTE_GET (vms_external->descsz);
- inote.descdata = inote.namedata + align_power (inote.namesz, 3);
- inote.descpos = offset + (inote.descdata - (char *) pnotes);
-
- next = (Elf_External_Note *)
- (inote.descdata + align_power (inote.descsz, 3));
- }
+ {
+ Elf64_External_VMS_Note *vms_external;
+
+ /* PR binutils/15191
+ Make sure that there is enough data to read. */
+ min_notesz = offsetof (Elf64_External_VMS_Note, name);
+ if (data_remaining < min_notesz)
+ {
+ warn (_("Corrupt note: only %d bytes remain, not enough for a full note\n"),
+ (int) data_remaining);
+ break;
+ }
- if ( ((char *) next > ((char *) pnotes) + length)
- || ((char *) next < (char *) pnotes))
+ vms_external = (Elf64_External_VMS_Note *) external;
+ inote.type = BYTE_GET (vms_external->type);
+ inote.namesz = BYTE_GET (vms_external->namesz);
+ inote.namedata = vms_external->name;
+ inote.descsz = BYTE_GET (vms_external->descsz);
+ inote.descdata = inote.namedata + align_power (inote.namesz, 3);
+ inote.descpos = offset + (inote.descdata - (char *) pnotes);
+ next = inote.descdata + align_power (inote.descsz, 3);
+ }
+
+ if (inote.descdata < (char *) external + min_notesz
+ || next < (char *) external + min_notesz
+ || data_remaining < (size_t)(next - (char *) external))
{
- warn (_("corrupt note found at offset %lx into core notes\n"),
+ warn (_("note with invalid namesz and/or descsz found at offset 0x%lx\n"),
(unsigned long) ((char *) external - (char *) pnotes));
- warn (_(" type: %lx, namesize: %08lx, descsize: %08lx\n"),
+ warn (_(" type: 0x%lx, namesize: 0x%08lx, descsize: 0x%08lx\n"),
inote.type, inote.namesz, inote.descsz);
break;
}
- external = next;
-
- /* Prevent out-of-bounds indexing. */
- if (inote.namedata + inote.namesz > (char *) pnotes + length
- || inote.namedata + inote.namesz < inote.namedata)
- {
- warn (_("corrupt note found at offset %lx into core notes\n"),
- (unsigned long) ((char *) external - (char *) pnotes));
- warn (_(" type: %lx, namesize: %08lx, descsize: %08lx\n"),
- inote.type, inote.namesz, inote.descsz);
- break;
- }
+ external = (Elf_External_Note *) next;
/* Verify that name is null terminated. It appears that at least
one version of Linux (RedHat 6.0) generates corefiles that don't
projects / binutils-gdb.git / blobdiff