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Re: i386msdos uninitialised read

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Another fix.

	* i386msdos.c (msdos_object_p): Catch -1 return from bfd_bread.
This commit is contained in:
Alan Modra
2020-03-26 17:57:18 +10:30
parent 4c4addbe57
commit ff76851054
2 changed files with 5 additions and 1 deletions
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4
bfd/ChangeLog
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@ -1,3 +1,7 @@
2020-03-26 Alan Modra <amodra@gmail.com>
* i386msdos.c (msdos_object_p): Catch -1 return from bfd_bread.
2020-03-26 Alan Modra <amodra@gmail.com> 2020-03-26 Alan Modra <amodra@gmail.com>
* vms-alpha.c (dst_define_location): Limit size of dst_ptr_offsets * vms-alpha.c (dst_define_location): Limit size of dst_ptr_offsets

2
bfd/i386msdos.c
View File

@ -50,7 +50,7 @@ msdos_object_p (bfd *abfd)
bfd_size_type size; bfd_size_type size;
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
|| (size = bfd_bread (&hdr, sizeof (hdr), abfd)) < DOS_HDR_SIZE) || (size = bfd_bread (&hdr, sizeof (hdr), abfd)) + 1 < DOS_HDR_SIZE + 1)
{ {
if (bfd_get_error () != bfd_error_system_call) if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format); bfd_set_error (bfd_error_wrong_format);