binutils/binutils-ppc64le-note-merge.patch
Nick Clifton 0b119dd9d5 Unretire the CVE 2021-20197 patch.
Fix merging ppc64le notes (again).  (#1928936)
2021-02-22 16:49:04 +00:00

43 lines
1.3 KiB
Diff

--- binutils.orig/binutils/objcopy.c 2021-02-18 11:35:48.062479490 +0000
+++ binutils-2.30/binutils/objcopy.c 2021-02-18 11:36:52.207071148 +0000
@@ -2224,6 +2224,11 @@ merge_gnu_build_notes (bfd * ab
goto done;
}
+ if (start > end)
+ /* This can happen with PPC64LE binaries where empty notes are
+ encoded as start = end + 4. */
+ start = end;
+
if (is_open_note (pnote))
{
if (start)
--- binutils.orig/binutils/objcopy.c 2021-02-22 10:36:15.710374328 +0000
+++ binutils-2.36.1/binutils/objcopy.c 2021-02-22 16:47:11.702344502 +0000
@@ -2246,23 +2246,8 @@ merge_gnu_build_notes (bfd * ab
break;
case 8:
- if (! is_64bit (abfd))
- {
- start = bfd_get_32 (abfd, pnote->note.descdata);
- end = bfd_get_32 (abfd, pnote->note.descdata + 4);
- }
- else
- {
- start = bfd_get_64 (abfd, pnote->note.descdata);
- /* FIXME: For version 1 and 2 notes we should try to
- calculate the end address by finding a symbol whose
- value is START, and then adding in its size.
-
- For now though, since v1 and v2 was not intended to
- handle gaps, we chose an artificially large end
- address. */
- end = (bfd_vma) -1;
- }
+ start = bfd_get_32 (abfd, pnote->note.descdata);
+ end = bfd_get_32 (abfd, pnote->note.descdata + 4);
break;
case 16: