From aebb3d543da4d411d3d767912193c3849f59ff99 Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Sat, 1 Jan 2022 13:52:26 +1030 Subject: [PATCH] ubsan: integer overflow in section filepos subtraction * elf.c (assign_file_positions_for_non_load_sections): Avoid signed integer overflow. --- bfd/elf.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/bfd/elf.c b/bfd/elf.c index 92c06f2e44f..d8a270d5219 100644 --- a/bfd/elf.c +++ b/bfd/elf.c @@ -6289,8 +6289,7 @@ assign_file_positions_for_non_load_sections (bfd *abfd, Elf_Internal_Shdr *hdr = &elf_section_data (sect)->this_hdr; if (hdr->sh_type != SHT_NOBITS) { - p->p_filesz = (sect->filepos - m->sections[0]->filepos - + hdr->sh_size); + p->p_filesz = sect->filepos - p->p_offset + hdr->sh_size; /* NB: p_memsz of the loadable PT_NOTE segment should be the same as p_filesz. */ if (p->p_type == PT_NOTE -- 2.30.2