Patch "ray_cs: Avoid reading past end of buffer" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

ray_cs: Avoid reading past end of buffer

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
ray_cs-avoid-reading-past-end-of-buffer.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Kees Cook <[email protected]>
Date: Fri, 5 May 2017 15:38:41 -0700
Subject: ray_cs: Avoid reading past end of buffer

From: Kees Cook <[email protected]>

[ Upstream commit e48d661eb13f2f83861428f001c567fdb3f317e8 ]

Using memcpy() from a buffer that is shorter than the length copied means the destination buffer is being filled with arbitrary data from the kernel rodata segment. In this case, the source was made longer, since it did not match the destination structure size. Additionally removes a needless cast.

This was found with the future CONFIG_FORTIFY_SOURCE feature.

---
 drivers/net/wireless/ray_cs.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

@@ -247,7 +247,10 @@ static const UCHAR b4_default_startup_pa
 	0x04, 0x08,		/* Noise gain, limit offset */
 	0x28, 0x28,		/* det rssi, med busy offsets */
 	7,			/* det sync thresh */
-	0, 2, 2			/* test mode, min, max */
+	0, 2, 2,		/* test mode, min, max */
+	0,			/* rx/tx delay */
+	0, 0, 0, 0, 0, 0,	/* current BSS id */
+	0			/* hop set */
 };
 
 /*===========================================================================*/

@@ -598,7 +601,7 @@ static void init_startup_params(ray_dev_
 	 *    a_beacon_period = hops    a_beacon_period = KuS
 	 *//* 64ms = 010000 */
 	if (local->fw_ver == 0x55) {
-		memcpy((UCHAR *) &local->sparm.b4, b4_default_startup_parms,
+		memcpy(&local->sparm.b4, b4_default_startup_parms,
 		       sizeof(struct b4_startup_params));
 		/* Translate sane kus input values to old build 4/5 format */
 		/* i = hop time in uS truncated to 3 bytes */

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/qlge-avoid-reading-past-end-of-buffer.patch queue-4.4/pidns-disable-pid-allocation-if-pid_ns_prepare_proc-is-failed-in-alloc_pid.patch queue-4.4/ray_cs-avoid-reading-past-end-of-buffer.patch queue-4.4/bna-avoid-reading-past-end-of-buffer.patch