apparmor/attach: make sure buffer is NUL-terminated

Signed-off-by: Christian Seiler <christian@iwakd.de> Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

apparmor/attach: make sure buffer is NUL-terminated
626ad11b · Christian Seiler · Serge Hallyn · a0e93eeb · 626ad11b
Commit 626ad11b authored Aug 13, 2013 by Christian Seiler Committed by Serge Hallyn Aug 14, 2013
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apparmor.c src/lxc/apparmor.c +2 -1

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--- a/src/lxc/apparmor.c
+++ b/src/lxc/apparmor.c
@@ -42,12 +42,13 @@ again:
 	}
 	sz += 1024;
 	buf = realloc(buf, sz);
+	memset(buf, 0, sz);
 	if (!buf) {
 		ERROR("out of memory");
 		fclose(f);
 		return NULL;
 	}
-	ret = fread(buf, 1, sz, f);
+	ret = fread(buf, 1, sz - 1, f);
 	fclose(f);
 	if (ret >= sz)
 		goto again;