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diff -rup binutils.orig/bfd/elf-attrs.c binutils-2.27/bfd/elf-attrs.c
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--- binutils.orig/bfd/elf-attrs.c 2018-05-30 09:57:23.385080577 +0100
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+++ binutils-2.27/bfd/elf-attrs.c 2018-05-30 10:01:03.528712202 +0100
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@@ -438,6 +438,15 @@ _bfd_elf_parse_attributes (bfd *abfd, El
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/* PR 17512: file: 2844a11d. */
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if (hdr->sh_size == 0)
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return;
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+ if (hdr->sh_size > bfd_get_size (abfd))
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+ {
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+ /* xgettext:c-format */
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+ _bfd_error_handler (_("%B: error: attribute section '%A' too big: %#llx"),
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+ abfd, hdr->bfd_section, (long long) hdr->sh_size);
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+ bfd_set_error (bfd_error_invalid_operation);
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+ return;
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+ }
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+
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contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
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if (!contents)
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return;
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diff -rup binutils.orig/bfd/elf.c binutils-2.27/bfd/elf.c
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--- binutils.orig/bfd/elf.c 2018-05-30 09:57:23.382080610 +0100
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+++ binutils-2.27/bfd/elf.c 2018-05-30 10:01:52.766182199 +0100
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@@ -297,6 +297,7 @@ bfd_elf_get_str_section (bfd *abfd, unsi
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/* Allocate and clear an extra byte at the end, to prevent crashes
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in case the string table is not terminated. */
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if (shstrtabsize + 1 <= 1
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+ || shstrtabsize > bfd_get_size (abfd)
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|| bfd_seek (abfd, offset, SEEK_SET) != 0
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|| (shstrtab = (bfd_byte *) bfd_alloc (abfd, shstrtabsize + 1)) == NULL)
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shstrtab = NULL;
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