Guarantee sufficient memory for scratch pathname

Fix a malloc bug with single entry/short PATHs in capsh code for "=="
support.

Signed-off-by: Andrew G. Morgan <morgan@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/progs/capsh.c b/progs/capsh.c
index 4f0b603..899f79c 100644
--- a/progs/capsh.c
+++ b/progs/capsh.c
@@ -350,7 +350,7 @@ static char *find_self(const char *arg0)
     }
 
     parts = strdup(path);
-    scratch = malloc(1+strlen(path));
+    scratch = malloc(2+strlen(path)+strlen(arg0));
     if (parts == NULL || scratch == NULL) {
         fprintf(stderr, "insufficient memory for path building\n");
 	exit(1);