autofs-5.1.7 - add length check in umount_subtree_mounts()

From: Ian Kent <raven@themaw.net>

Coverity: fixed_size_dest: You might overrun the 4097-character

	  fixed-size string "key" by copying "me->key" without

	  checking the length.

Signed-off-by: Ian Kent <raven@themaw.net>

---

 CHANGELOG          |    1 +

 daemon/automount.c |    5 +++++

 2 files changed, 6 insertions(+)

--- autofs-5.1.4.orig/CHANGELOG

+++ autofs-5.1.4/CHANGELOG

@@ -55,6 +55,7 @@

 - fix possible memory leak in master_parse().

 - fix possible memory leak in mnts_add_amdmount().

 - fix double unlock in parse_mount().

+- add length check in umount_subtree_mounts().

 xx/xx/2018 autofs-5.1.5

 - fix flag file permission.

--- autofs-5.1.4.orig/daemon/automount.c

+++ autofs-5.1.4/daemon/automount.c

@@ -562,6 +562,11 @@ static int umount_subtree_mounts(struct

 			left++;

 		}

+		if (me->len > PATH_MAX) {

+			crit(ap->logopt, "me->key too long for buffer");

+			return 1;

+		}

+

 		strcpy(key, me->key);

 		cache_unlock(mc);