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Fix an attempt to allocate an unreasonably large amount of memory when parsing a corrupt ELF file.

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PR  29924
	* objdump.c (load_specific_debug_section): Check for excessively
	large sections.
This commit is contained in:
Nick Clifton
2022-12-21 11:51:23 +00:00
parent a7a32d588f
commit 75393a2d54
2 changed files with 9 additions and 1 deletions
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4
binutils/objdump.c
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@ -4225,7 +4225,9 @@ load_specific_debug_section (enum dwarf_section_display_enum debug,
section->size = bfd_section_size (sec);
/* PR 24360: On 32-bit hosts sizeof (size_t) < sizeof (bfd_size_type). */
alloced = amt = section->size + 1;
if (alloced != amt || alloced == 0)
if (alloced != amt
|| alloced == 0
|| (bfd_get_size (abfd) != 0 && alloced >= bfd_get_size (abfd)))
{
section->start = NULL;
free_debug_section (debug);