Author: markj
Date: Sun Feb 5 02:47:34 2017
New Revision: 313266
URL: https://svnweb.freebsd.org/changeset/base/313266
Log:
Ensure that the DOF string length is divisible by 2.
It is an ASCII encoding of a hexadecimal representation of the DOF file
used to enable anonymous tracing, so its length should always be even.
MFC after: 1 week
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c Sun Feb
5 02:45:35 2017 (r313265)
+++ head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c Sun Feb
5 02:47:34 2017 (r313266)
@@ -13346,8 +13346,11 @@ dtrace_dof_property(const char *name)
data += strlen(name) + 1; /* skip past the '=' */
len = eol - data;
+ if (len % 2 != 0) {
+ dtrace_dof_error(NULL, "invalid DOF encoding length");
+ goto doferr;
+ }
bytes = len / 2;
-
if (bytes < sizeof(dof_hdr_t)) {
dtrace_dof_error(NULL, "truncated header");
goto doferr;
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