Linux v4.4-8855-ga200dcb

KEYS-Fix-keyring-ref-leak-in-join_session_keyring.patch

@@ -0,0 +1,78 @@
+From 05fd13592b60c3e9873f56705f80ff934e98b046 Mon Sep 17 00:00:00 2001
+From: David Howells <dhowells@redhat.com>
+Date: Mon, 18 Jan 2016 10:53:31 +0000
+Subject: [PATCH] KEYS: Fix keyring ref leak in join_session_keyring()
+
+This fixes CVE-2016-0728.
+
+If a thread is asked to join as a session keyring the keyring that's already
+set as its session, we leak a keyring reference.
+
+This can be tested with the following program:
+
+	#include <stddef.h>
+	#include <stdio.h>
+	#include <sys/types.h>
+	#include <keyutils.h>
+
+	int main(int argc, const char *argv[])
+	{
+		int i = 0;
+		key_serial_t serial;
+
+		serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING,
+				"leaked-keyring");
+		if (serial < 0) {
+			perror("keyctl");
+			return -1;
+		}
+
+		if (keyctl(KEYCTL_SETPERM, serial,
+			   KEY_POS_ALL | KEY_USR_ALL) < 0) {
+			perror("keyctl");
+			return -1;
+		}
+
+		for (i = 0; i < 100; i++) {
+			serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING,
+					"leaked-keyring");
+			if (serial < 0) {
+				perror("keyctl");
+				return -1;
+			}
+		}
+
+		return 0;
+	}
+
+If, after the program has run, there something like the following line in
+/proc/keys:
+
+3f3d898f I--Q---   100 perm 3f3f0000     0     0 keyring   leaked-keyring: empty
+
+with a usage count of 100 * the number of times the program has been run,
+then the kernel is malfunctioning.  If leaked-keyring has zero usages or
+has been garbage collected, then the problem is fixed.
+
+Reported-by: Yevgeny Pats <yevgeny@perception-point.io>
+Signed-off-by: David Howells <dhowells@redhat.com>
+RH-bugzilla: 1298036
+---
+ security/keys/process_keys.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
+index 43b4cddbf2b3..7877e5cd4e23 100644
+--- a/security/keys/process_keys.c
++++ b/security/keys/process_keys.c
+@@ -794,6 +794,7 @@ long join_session_keyring(const char *name)
+ 		ret = PTR_ERR(keyring);
+ 		goto error2;
+ 	} else if (keyring == new->session_keyring) {
++		key_put(keyring);
+ 		ret = 0;
+ 		goto error2;
+ 	}
+-- 
+2.5.0
+

config-armv7-lpae

@@ -81,3 +81,4 @@ CONFIG_GPIO_SYSCON=m
 # CONFIG_SND_SOC_TEGRA20_DAS is not set
 # CONFIG_SND_SOC_TEGRA20_SPDIF is not set
 # CONFIG_SND_SOC_TEGRA_RT5677 is not set
+# CONFIG_DRM_OMAP is not set

config-generic

@@ -3222,6 +3222,7 @@ CONFIG_RTC_DRV_V3020=m
 CONFIG_RTC_DRV_DS2404=m
 CONFIG_RTC_DRV_STK17TA8=m
 # CONFIG_RTC_DRV_S35390A is not set
+CONFIG_RTC_DRV_RX8010=m
 CONFIG_RTC_DRV_RX8581=m
 CONFIG_RTC_DRV_RX8025=m
 CONFIG_RTC_DRV_DS1286=m
@@ -5256,7 +5257,7 @@ CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM=y
 # CONFIG_SND_SOC_STI_SAS is not set
 # CONFIG_SND_SOC_INNO_RK3036 is not set
 # CONFIG_SND_SOC_IMG is not set
-# CONFIG_SND_SOC_AMD_ACP is not set
+CONFIG_SND_SOC_AMD_ACP=m
 
 CONFIG_BALLOON_COMPACTION=y
 CONFIG_COMPACTION=y

gitrev

@@ -1 +1 @@
-5807fcaa9bf7dd87241df739161c119cf78a6bc4
+a200dcb34693084e56496960d855afdeaaf9578f

kernel.spec

@@ -67,7 +67,7 @@ Summary: The Linux kernel
 # The rc snapshot level
 %define rcrev 0
 # The git snapshot level
-%define gitrev 5
+%define gitrev 6
 # Set rpm version accordingly
 %define rpmversion 4.%{upstream_sublevel}.0
 %endif
@@ -599,6 +599,9 @@ Patch623: usb-serial-visor-fix-crash-on-detecting-device-witho.patch
 # https://patchwork.kernel.org/patch/8055301/
 Patch625: cpupower-Fix-build-error-in-cpufreq-info.patch
 
+#CVE-2016-0728 rhbz 1296623
+Patch626: KEYS-Fix-keyring-ref-leak-in-join_session_keyring.patch
+
 # END OF PATCH DEFINITIONS
 
 %endif
@@ -2044,6 +2047,10 @@ fi
 #
 # 
 %changelog
+* Tue Jan 19 2016 Justin M. Forbes <jforbes@fedoraproject.org> - 4.5.0-0.rc0.git6.1
+- Linux v4.4-8855-ga200dcb
+- CVE-2016-0728 Keys: reference leak in join_session_keyring (rhbz 1296623)
+
 * Tue Jan 19 2016 Peter Robinson <pbrobinson@fedoraproject.org>
 - Fix boot on TI am33xx/omap devices
 

sources

@@ -1,3 +1,3 @@
 9a78fa2eb6c68ca5a40ed5af08142599  linux-4.4.tar.xz
 dcbc8fe378a676d5d0dd208cf524e144  perf-man-4.4.tar.gz
-37c094912e7812f0a856e67aa313c9e8  patch-4.4-git5.xz
+64ceedc19f6080bedbafdc1321d9ac95  patch-4.4-git6.xz