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| author | Nick Clifton <nickc@redhat.com> | 2015-02-10 14:11:00 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2015-02-10 14:11:00 +0000 |
| commit | 77ef86547510cee3a2bff27bea9f19f0b2715bae (patch) | |
| tree | cf37b63c2505ce132ac49d286340751c4caebe7f /bfd/peXXigen.c | |
| parent | b677c4562dea82ffaf413e7e9311ca4b9c1c6ec6 (diff) | |
| download | gdb-77ef86547510cee3a2bff27bea9f19f0b2715bae.zip gdb-77ef86547510cee3a2bff27bea9f19f0b2715bae.tar.gz gdb-77ef86547510cee3a2bff27bea9f19f0b2715bae.tar.bz2 | |
Fix memory access violations triggered by running objdump compiled with out-of-bounds sanitization checking.
PR binutils/17512
* dwarf.c (eh_addr_size): Use an unsigned type.
(size_of_encoded_value): Return an unsigned type.
(read_leb128): Break if the shift becomes too big.
(process_extended_line_op): Do not read the address if the length
is too long.
(read_cie): Warn and fail if the pointer size or segment size are
too big.
* dwarf.h (DWARF2_External_LineInfo): Delete unused and incorrect
structure definition.
(DWARF2_External_PubNames): Likewise.
(DWARF2_External_CompUnit): Likewise.
(DWARF2_External_ARange): Likewise.
(DWARF2_Internal_LineInfo): Use dwarf_vma type for
li_prologue_length.
(eh_addr_size): Update prototype.
* coffcode.h (styp_to_sec_flags): Use an unsigned long type to
hold the flag bits.
* peXXigen.c (pe_print_reloc): Use unsigned types to hold the
size and number of relocs.
(pe_print_debugdata): Use a 32-bit aligned buffer to store the
codeview record.
* versados.c (process_otr): Check the esdid value before using it
to access the EDATA.
Diffstat (limited to 'bfd/peXXigen.c')
| -rw-r--r-- | bfd/peXXigen.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/bfd/peXXigen.c b/bfd/peXXigen.c index 9feab3b..a7e9f04 100644 --- a/bfd/peXXigen.c +++ b/bfd/peXXigen.c @@ -1151,7 +1151,7 @@ _bfd_XXi_slurp_codeview_record (bfd * abfd, file_ptr where, unsigned long length /* Ensure null termination of filename. */ buffer[256] = '\0'; - cvinfo->CVSignature = H_GET_32(abfd, buffer); + cvinfo->CVSignature = H_GET_32 (abfd, buffer); cvinfo->Age = 0; if ((cvinfo->CVSignature == CVINFO_PDB70_CVSIGNATURE) @@ -2216,7 +2216,7 @@ pe_print_reloc (bfd * abfd, void * vfile) { int j; bfd_vma virtual_address; - long number, size; + unsigned long number, size; bfd_byte *chunk_end; /* The .reloc section is a sequence of blocks, with a header consisting @@ -2231,7 +2231,7 @@ pe_print_reloc (bfd * abfd, void * vfile) fprintf (file, _("\nVirtual Address: %08lx Chunk size %ld (0x%lx) Number of fixups %ld\n"), - (unsigned long) virtual_address, size, (unsigned long) size, number); + (unsigned long) virtual_address, size, size, number); chunk_end = p + size; if (chunk_end > end) @@ -2674,7 +2674,11 @@ pe_print_debugdata (bfd * abfd, void * vfile) if (idd.Type == PE_IMAGE_DEBUG_TYPE_CODEVIEW) { char signature[CV_INFO_SIGNATURE_LENGTH * 2 + 1]; - char buffer[256 + 1]; + /* PR 17512: file: 065-29434-0.001:0.1 + We need to use a 32-bit aligned buffer + to safely read in a codeview record. */ + char buffer[256 + 1] ATTRIBUTE_ALIGNED_ALIGNOF (CODEVIEW_INFO); + CODEVIEW_INFO *cvinfo = (CODEVIEW_INFO *) buffer; /* The debug entry doesn't have to have to be in a section, |