Author: ae
Date: Tue Jun 28 05:04:31 2011
New Revision: 223619
URL: http://svn.freebsd.org/changeset/base/223619
Log:
MFC r223364:
When user specifies the bootcode with size smaller than VTOC_BOOTSIZE,
gpart_write_partcode_vtoc8 does access out of range of allocated memory.
Check size of bootcode before writing it.
Pointed out by: ru
Modified:
stable/7/sbin/geom/class/part/geom_part.c
Directory Properties:
stable/7/sbin/geom/class/part/ (props changed)
Modified: stable/7/sbin/geom/class/part/geom_part.c
==============================================================================
--- stable/7/sbin/geom/class/part/geom_part.c Tue Jun 28 04:57:53 2011
(r223618)
+++ stable/7/sbin/geom/class/part/geom_part.c Tue Jun 28 05:04:31 2011
(r223619)
@@ -576,8 +576,11 @@ gpart_bootcode(struct gctl_req *req, uns
if (idx == 0)
errx(EXIT_FAILURE, "missing -i option");
gpart_write_partcode(gp, idx, partcode, partsize);
- } else
+ } else {
+ if (partsize != VTOC_BOOTSIZE)
+ errx(EXIT_FAILURE, "invalid bootcode");
gpart_write_partcode_vtoc8(gp, idx, partcode);
+ }
} else
if (bootcode == NULL)
errx(EXIT_FAILURE, "no -b nor -p");
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