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PR binutils/15191
* readelf.c (offsetof): Define. (CHECK_ENTSIZE_VALUES): Remove extraneous indefinite article. (process_corefile_note_segment): Allow notes without name or desc. Combine out-of-range checks. Disallow "negative" notesz or descsz.
This commit is contained in:
Alan Modra
parent
727f703102
commit
15b42fb01d
@ -1,3 +1,12 @@
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2013-02-27 Alan Modra <amodra@gmail.com>
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PR binutils/15191
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* readelf.c (offsetof): Define.
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(CHECK_ENTSIZE_VALUES): Remove extraneous indefinite article.
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(process_corefile_note_segment): Allow notes without name or
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desc. Combine out-of-range checks. Disallow "negative"
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notesz or descsz.
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2013-02-26 Nick Clifton <nickc@redhat.com>
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PR binutils/15191
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@ -78,14 +87,14 @@
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2013-01-25 Cary Coutant <ccoutant@google.com>
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* dwarf.c (display_loc_list): Update offset for each line
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printed.
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(print_addr_index): New function.
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(display_loc_list_dwo): Update offset for each line printed.
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Fix problems displaying loclists in .dwo files. Add support
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for type 4 entries.
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(display_debug_loc): Remove custom header for .dwo files.
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(display_debug_addr): Adjust formatting.
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* dwarf.c (display_loc_list): Update offset for each line
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printed.
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(print_addr_index): New function.
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(display_loc_list_dwo): Update offset for each line printed.
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Fix problems displaying loclists in .dwo files. Add support
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for type 4 entries.
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(display_debug_loc): Remove custom header for .dwo files.
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(display_debug_addr): Adjust formatting.
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2013-01-25 Marco Atzeri <marco.atzeri@gmail.com>
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@ -160,6 +160,10 @@
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#include "safe-ctype.h"
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#include "filenames.h"
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#ifndef offsetof
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#define offsetof(TYPE, MEMBER) ((size_t) &(((TYPE *) 0)->MEMBER))
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#endif
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char * program_name = "readelf";
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static long archive_file_offset;
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static unsigned long archive_file_size;
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@ -4754,7 +4758,7 @@ process_section_headers (FILE * file)
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bfd_size_type expected_entsize = is_32bit_elf ? size32 : size64; \
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if (section->sh_entsize != expected_entsize) \
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{ \
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error (_("Section %d has invalid an sh_entsize of %" BFD_VMA_FMT "x\n"), \
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error (_("Section %d has invalid sh_entsize of %" BFD_VMA_FMT "x\n"), \
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i, section->sh_entsize); \
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error (_("(Using the expected size of %d for the rest of this dump)\n"), \
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(int) expected_entsize); \
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@ -13340,13 +13344,12 @@ process_corefile_note_segment (FILE * file, bfd_vma offset, bfd_vma length)
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Elf_External_Note * pnotes;
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Elf_External_Note * external;
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int res = 1;
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bfd_signed_vma data_remaining;
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if (length <= 0)
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return 0;
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pnotes = (Elf_External_Note *) get_data (NULL, file, offset, 1, length,
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_("notes"));
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_("notes"));
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if (pnotes == NULL)
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return 0;
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@ -13356,79 +13359,69 @@ process_corefile_note_segment (FILE * file, bfd_vma offset, bfd_vma length)
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(unsigned long) offset, (unsigned long) length);
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printf (_(" %-20s %10s\tDescription\n"), _("Owner"), _("Data size"));
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data_remaining = length;
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while (external < (Elf_External_Note *) ((char *) pnotes + length))
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while ((char *) external < (char *) pnotes + length)
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{
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Elf_External_Note * next;
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Elf_Internal_Note inote;
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size_t min_notesz;
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char *next;
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char * temp = NULL;
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size_t data_remaining = ((char *) pnotes + length) - (char *) external;
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if (!is_ia64_vms ())
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{
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/* PR binutils/15191
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Make sure that there is enough data to read. */
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if (data_remaining < sizeof * next)
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{
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warn (_("Corrupt note: only %d bytes remain, not enough for a full note\n"),
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(int) data_remaining);
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break;
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}
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inote.type = BYTE_GET (external->type);
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inote.namesz = BYTE_GET (external->namesz);
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inote.namedata = external->name;
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inote.descsz = BYTE_GET (external->descsz);
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inote.descdata = inote.namedata + align_power (inote.namesz, 2);
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inote.descpos = offset + (inote.descdata - (char *) pnotes);
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next = (Elf_External_Note *) (inote.descdata + align_power (inote.descsz, 2));
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}
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else
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{
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Elf64_External_VMS_Note *vms_external;
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/* PR binutils/15191
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Make sure that there is enough data to read. */
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if (data_remaining < sizeof * vms_external)
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{
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warn (_("Corrupt note: only %d bytes remain, not enough for a full note\n"),
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(int) data_remaining);
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break;
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}
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vms_external = (Elf64_External_VMS_Note *) external;
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inote.type = BYTE_GET (vms_external->type);
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inote.namesz = BYTE_GET (vms_external->namesz);
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inote.namedata = vms_external->name;
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inote.descsz = BYTE_GET (vms_external->descsz);
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inote.descdata = inote.namedata + align_power (inote.namesz, 3);
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inote.descpos = offset + (inote.descdata - (char *) pnotes);
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next = (Elf_External_Note *)
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(inote.descdata + align_power (inote.descsz, 3));
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}
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data_remaining -= ((char *) next - (char *) external);
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if (data_remaining < 0)
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{
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warn (_("note with invalid namesz &/or descsz found at offset 0x%lx\n"),
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/* PR binutils/15191
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Make sure that there is enough data to read. */
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min_notesz = offsetof (Elf_External_Note, name);
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if (data_remaining < min_notesz)
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{
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warn (_("Corrupt note: only %d bytes remain, not enough for a full note\n"),
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(int) data_remaining);
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break;
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}
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inote.type = BYTE_GET (external->type);
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inote.namesz = BYTE_GET (external->namesz);
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inote.namedata = external->name;
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inote.descsz = BYTE_GET (external->descsz);
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inote.descdata = inote.namedata + align_power (inote.namesz, 2);
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inote.descpos = offset + (inote.descdata - (char *) pnotes);
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next = inote.descdata + align_power (inote.descsz, 2);
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}
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else
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{
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Elf64_External_VMS_Note *vms_external;
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/* PR binutils/15191
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Make sure that there is enough data to read. */
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min_notesz = offsetof (Elf64_External_VMS_Note, name);
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if (data_remaining < min_notesz)
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{
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warn (_("Corrupt note: only %d bytes remain, not enough for a full note\n"),
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(int) data_remaining);
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break;
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}
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vms_external = (Elf64_External_VMS_Note *) external;
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inote.type = BYTE_GET (vms_external->type);
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inote.namesz = BYTE_GET (vms_external->namesz);
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inote.namedata = vms_external->name;
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inote.descsz = BYTE_GET (vms_external->descsz);
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inote.descdata = inote.namedata + align_power (inote.namesz, 3);
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inote.descpos = offset + (inote.descdata - (char *) pnotes);
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next = inote.descdata + align_power (inote.descsz, 3);
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}
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if (inote.descdata < (char *) external + min_notesz
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|| next < (char *) external + min_notesz
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|| data_remaining < (size_t)(next - (char *) external))
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{
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warn (_("note with invalid namesz and/or descsz found at offset 0x%lx\n"),
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(unsigned long) ((char *) external - (char *) pnotes));
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warn (_(" type: 0x%lx, namesize: 0x%08lx, descsize: 0x%08lx\n"),
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inote.type, inote.namesz, inote.descsz);
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break;
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}
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external = next;
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/* Prevent out-of-bounds indexing. */
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if (inote.namedata + inote.namesz > (char *) pnotes + length
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|| inote.namedata + inote.namesz < inote.namedata)
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{
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warn (_("note with invalid namesz found at offset 0x%lx\n"),
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(unsigned long) ((char *) external - (char *) pnotes));
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warn (_(" type: 0x%lx, namesize: 0x%08lx, descsize: 0x%08lx\n"),
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inote.type, inote.namesz, inote.descsz);
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break;
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}
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external = (Elf_External_Note *) next;
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/* Verify that name is null terminated. It appears that at least
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one version of Linux (RedHat 6.0) generates corefiles that don't
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