From 75393a2d54bcc40053e5262a3de9d70c5ebfbbfd Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Wed, 21 Dec 2022 11:51:23 +0000 Subject: [PATCH] Fix an attempt to allocate an unreasonably large amount of memory when parsing a corrupt ELF file. PR 29924 * objdump.c (load_specific_debug_section): Check for excessively large sections. Upstream-Status: Backport CVE: CVE-2022-48063 Signed-off-by: Armin Kuster --- binutils/ChangeLog | 6 ++++++ binutils/objdump.c | 4 +++- 2 files changed, 9 insertions(+), 1 deletion(-) Index: git/binutils/objdump.c =================================================================== --- git.orig/binutils/objdump.c +++ git/binutils/objdump.c @@ -3768,7 +3768,9 @@ load_specific_debug_section (enum dwarf_ 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); Index: git/binutils/ChangeLog =================================================================== --- git.orig/binutils/ChangeLog +++ git/binutils/ChangeLog @@ -1,3 +1,9 @@ +2022-12-21 Nick Clifton + + PR 29924 + * objdump.c (load_specific_debug_section): Check for excessively + large sections. + 2022-03-23 Nick Clifton Import patch from mainline: