CVE-2016-4569 info leak in sound module (rhbz 1334643 1334645)

ALSA-timer-Fix-leak-in-SNDRV_TIMER_IOCTL_PARAMS.patch

@@ -0,0 +1,33 @@
+From 527a5767c165abd2b4dba99da992c51ca7547562 Mon Sep 17 00:00:00 2001
+From: Kangjie Lu <kangjielu@gmail.com>
+Date: Tue, 3 May 2016 16:44:07 -0400
+Subject: [PATCH 1/3] ALSA: timer: Fix leak in SNDRV_TIMER_IOCTL_PARAMS
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The stack object “tread” has a total size of 32 bytes. Its field
+“event” and “val” both contain 4 bytes padding. These 8 bytes
+padding bytes are sent to user without being initialized.
+
+Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+---
+ sound/core/timer.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index 6469bedda2f3..964f5ebf495e 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -1739,6 +1739,7 @@ static int snd_timer_user_params(struct file *file,
+ 	if (tu->timeri->flags & SNDRV_TIMER_IFLG_EARLY_EVENT) {
+ 		if (tu->tread) {
+ 			struct snd_timer_tread tread;
++			memset(&tread, 0, sizeof(tread));
+ 			tread.event = SNDRV_TIMER_EVENT_EARLY;
+ 			tread.tstamp.tv_sec = 0;
+ 			tread.tstamp.tv_nsec = 0;
+-- 
+2.5.5
+

ALSA-timer-Fix-leak-in-events-via-snd_timer_user_cca.patch

@@ -0,0 +1,34 @@
+From addd6e9f0e25efb00d813d54528607c75b77c416 Mon Sep 17 00:00:00 2001
+From: Kangjie Lu <kangjielu@gmail.com>
+Date: Tue, 3 May 2016 16:44:20 -0400
+Subject: [PATCH 2/3] ALSA: timer: Fix leak in events via
+ snd_timer_user_ccallback
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The stack object “r1” has a total size of 32 bytes. Its field
+“event” and “val” both contain 4 bytes padding. These 8 bytes
+padding bytes are sent to user without being initialized.
+
+Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+---
+ sound/core/timer.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index 964f5ebf495e..e98fa5feb731 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -1225,6 +1225,7 @@ static void snd_timer_user_ccallback(struct snd_timer_instance *timeri,
+ 		tu->tstamp = *tstamp;
+ 	if ((tu->filter & (1 << event)) == 0 || !tu->tread)
+ 		return;
++	memset(&r1, 0, sizeof(r1));
+ 	r1.event = event;
+ 	r1.tstamp = *tstamp;
+ 	r1.val = resolution;
+-- 
+2.5.5
+

ALSA-timer-Fix-leak-in-events-via-snd_timer_user_tin.patch

@@ -0,0 +1,34 @@
+From b06a443b5679e9a0298e2f206ddb60845569f62f Mon Sep 17 00:00:00 2001
+From: Kangjie Lu <kangjielu@gmail.com>
+Date: Tue, 3 May 2016 16:44:32 -0400
+Subject: [PATCH 3/3] ALSA: timer: Fix leak in events via
+ snd_timer_user_tinterrupt
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The stack object “r1” has a total size of 32 bytes. Its field
+“event” and “val” both contain 4 bytes padding. These 8 bytes
+padding bytes are sent to user without being initialized.
+
+Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+---
+ sound/core/timer.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/sound/core/timer.c b/sound/core/timer.c
+index e98fa5feb731..c69a27155433 100644
+--- a/sound/core/timer.c
++++ b/sound/core/timer.c
+@@ -1268,6 +1268,7 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri,
+ 	}
+ 	if ((tu->filter & (1 << SNDRV_TIMER_EVENT_RESOLUTION)) &&
+ 	    tu->last_resolution != resolution) {
++		memset(&r1, 0, sizeof(r1));
+ 		r1.event = SNDRV_TIMER_EVENT_RESOLUTION;
+ 		r1.tstamp = tstamp;
+ 		r1.val = resolution;
+-- 
+2.5.5
+

kernel.spec

@@ -618,6 +618,11 @@ Patch706: USB-usbfs-fix-potential-infoleak-in-devio.patch
 Patch707: net-fix-infoleak-in-llc.patch
 Patch708: net-fix-infoleak-in-rtnetlink.patch
 
+#CVE-2016-4569 rhbz 1334643 1334645
+Patch714: ALSA-timer-Fix-leak-in-SNDRV_TIMER_IOCTL_PARAMS.patch
+Patch715: ALSA-timer-Fix-leak-in-events-via-snd_timer_user_cca.patch
+Patch716: ALSA-timer-Fix-leak-in-events-via-snd_timer_user_tin.patch
+
 # END OF PATCH DEFINITIONS
 
 %endif
@@ -2143,6 +2148,9 @@ fi
 #
 # 
 %changelog
+* Tue May 10 2016 Josh Boyer <jwboyer@fedoraproject.org>
+- CVE-2016-4569 info leak in sound module (rhbz 1334643 1334645)
+
 * Mon May 09 2016 Josh Boyer <jwboyer@fedoraproject.org> - 4.6.0-0.rc7.git0.1
 - Linux v4.6-rc7