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Linux v3.15-7926-gd53b47c08d8f

This commit is contained in:
Josh Boyer 2014-06-12 13:02:42 -04:00
parent 0247327513
commit 8cc85e9033
6 changed files with 49 additions and 171 deletions
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128
auditsc-audit_krule-mask-accesses-need-bounds-checking.patch
View File

@ -1,128 +0,0 @@
Bugzilla: 1102715
Upstream-status: Submitted for 3.15 and CC'd to stable
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From: Eric Paris <eparis@redhat.com>
To: torvalds@linux-foundation.org
Cc: linux-audit@redhat.com, linux-kernel@vger.kernel.org,
Andy Lutomirski <luto@amacapital.net>, stable@vger.kernel.org,
Eric Paris <eparis@redhat.com>
Subject: [PATCH 1/2] auditsc: audit_krule mask accesses need bounds checking
Date: Wed, 28 May 2014 23:09:58 -0400
Message-Id: <1401332999-15167-1-git-send-email-eparis@redhat.com>
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From: Andy Lutomirski <luto@amacapital.net>
Fixes an easy DoS and possible information disclosure.
This does nothing about the broken state of x32 auditing.
eparis: If the admin has enabled auditd and has specifically loaded audit
rules. This bug has been around since before git. Wow...
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Eric Paris <eparis@redhat.com>
---
kernel/auditsc.c | 27 ++++++++++++++++++---------
1 file changed, 18 insertions(+), 9 deletions(-)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 254ce20..842f58a 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -728,6 +728,22 @@ static enum audit_state audit_filter_task(struct task_struct *tsk, char **key)
return AUDIT_BUILD_CONTEXT;
}
+static int audit_in_mask(const struct audit_krule *rule, unsigned long val)
+{
+ int word, bit;
+
+ if (val > 0xffffffff)
+ return false;
+
+ word = AUDIT_WORD(val);
+ if (word >= AUDIT_BITMASK_SIZE)
+ return false;
+
+ bit = AUDIT_BIT(val);
+
+ return rule->mask[word] & bit;
+}
+
/* At syscall entry and exit time, this filter is called if the
* audit_state is not low enough that auditing cannot take place, but is
* also not high enough that we already know we have to write an audit
@@ -745,11 +761,8 @@ static enum audit_state audit_filter_syscall(struct task_struct *tsk,
rcu_read_lock();
if (!list_empty(list)) {
- int word = AUDIT_WORD(ctx->major);
- int bit = AUDIT_BIT(ctx->major);
-
list_for_each_entry_rcu(e, list, list) {
- if ((e->rule.mask[word] & bit) == bit &&
+ if (audit_in_mask(&e->rule, ctx->major) &&
audit_filter_rules(tsk, &e->rule, ctx, NULL,
&state, false)) {
rcu_read_unlock();
@@ -769,20 +782,16 @@ static enum audit_state audit_filter_syscall(struct task_struct *tsk,
static int audit_filter_inode_name(struct task_struct *tsk,
struct audit_names *n,
struct audit_context *ctx) {
- int word, bit;
int h = audit_hash_ino((u32)n->ino);
struct list_head *list = &audit_inode_hash[h];
struct audit_entry *e;
enum audit_state state;
- word = AUDIT_WORD(ctx->major);
- bit = AUDIT_BIT(ctx->major);
-
if (list_empty(list))
return 0;
list_for_each_entry_rcu(e, list, list) {
- if ((e->rule.mask[word] & bit) == bit &&
+ if (audit_in_mask(&e->rule, ctx->major) &&
audit_filter_rules(tsk, &e->rule, ctx, n, &state, false)) {
ctx->current_state = state;
return 1;
--
1.9.0
--
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1
config-armv7-generic
View File

@ -187,6 +187,7 @@ CONFIG_SPI_SUN6I=m
CONFIG_MMC_SUNXI=m
CONFIG_GPIO_PCA953X=m
CONFIG_POWER_RESET_SUN6I=y
# CONFIG_TOUCHSCREEN_SUN4I is not set
CONFIG_REGMAP=y
CONFIG_REGMAP_I2C=m

1
config-generic
View File

@ -4764,6 +4764,7 @@ CONFIG_FTRACE_MCOUNT_RECORD=y
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_TRACE_BRANCH_PROFILING is not set
CONFIG_FUNCTION_PROFILER=y
# CONFIG_TRACEPOINT_BENCHMARK is not set
CONFIG_RING_BUFFER_BENCHMARK=m
# CONFIG_RING_BUFFER_STARTUP_TEST is not set
# CONFIG_RBTREE_TEST is not set

11
kernel.spec
View File

@ -67,7 +67,7 @@ Summary: The Linux kernel
# The rc snapshot level
%define rcrev 0
# The git snapshot level
%define gitrev 3
%define gitrev 4
# Set rpm version accordingly
%define rpmversion 3.%{upstream_sublevel}.0
%endif
@ -624,9 +624,6 @@ Patch25063: disable-libdw-unwind-on-non-x86.patch
#rhbz 983342 1093120
Patch25069: 0001-acpi-video-Add-4-new-models-to-the-use_native_backli.patch
# CVE-2014-3917 rhbz 1102571 1102715
Patch25093: auditsc-audit_krule-mask-accesses-need-bounds-checking.patch
Patch26000: perf-lib64.patch
# Patch series from Hans for various backlight and platform driver fixes
@ -1343,9 +1340,6 @@ ApplyPatch disable-libdw-unwind-on-non-x86.patch
#rhbz 983342 1093120
ApplyPatch 0001-acpi-video-Add-4-new-models-to-the-use_native_backli.patch
# CVE-2014-3917 rhbz 1102571 1102715
ApplyPatch auditsc-audit_krule-mask-accesses-need-bounds-checking.patch
ApplyPatch perf-lib64.patch
# Patch series from Hans for various backlight and platform driver fixes
@ -2231,6 +2225,9 @@ fi
# ||----w |
# || ||
%changelog
* Thu Jun 12 2014 Josh Boyer <jwboyer@fedoraproject.org> - 3.16.0-0.rc0.git4.1
- Linux v3.15-7926-gd53b47c08d8f
* Thu Jun 12 2014 Josh Boyer <jwboyer@fedoraproject.org> - 3.16.0-0.rc0.git3.1
- Linux v3.15-7378-g14208b0ec569

2
sources
View File

@ -1,3 +1,3 @@
97ca1625bb40368dc41b9a7971549071 linux-3.15.tar.xz
ef8f4db937f521a7e323ec589536ba25 perf-man-3.15.tar.gz
12ead2b79d5eddedbecad0426f96b49a patch-3.15-git3.xz
d1e2847f95d142ddcf96f4bd995b3467 patch-3.15-git4.xz

77
x86-vdso-Fix-vdso_install.patch
View File

@ -1,72 +1,79 @@
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From: Andy Lutomirski <luto@amacapital.net>
To: "H. Peter Anvin" <hpa@zytor.com>, Josh Boyer <jwboyer@fedoraproject.org>
Cc: Michal Marek <mmarek@suse.cz>, linux-kbuild@vger.kernel.org,
"Linux-Kernel@Vger. Kernel. Org" <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@amacapital.net>
Subject: [PATCH v2] x86,vdso: Fix vdso_install
Date: Wed, 11 Jun 2014 12:25:29 -0700
Message-Id: <5d5e221e59be20a3a7ceb99452e74e233383e7b4.1402514715.git.luto@amacapital.net>
<sam@ravnborg.org>, Andy Lutomirski <luto@amacapital.net>
Subject: [PATCH v3] x86,vdso: Fix vdso_install
Date: Thu, 12 Jun 2014 08:28:10 -0700
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X-Scanned-By: MIMEDefang 2.68 on 10.5.110.16
The filenames are different now. Inspired by a patch from
Sam Ravnborg.
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
---
I kept Sam's ack from v2, since v3 has only a trivial change.
Changes from v1: Remove core kbuild change
Changes from v2: Name the result .so files again, not .so.dbg
arch/x86/vdso/Makefile | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index 9769df0..e3683d6 100644
index 9769df0..845b45e 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -9,11 +9,6 @@ VDSOX32-$(CONFIG_X86_X32_ABI) := y
@ -94,12 +101,12 @@ index 9769df0..e3683d6 100644
+quiet_cmd_vdso_install = INSTALL $(@:install_%=%)
+ cmd_vdso_install = cp $< $(MODLIB)/vdso/$(@:install_%=%)
+
+vdso_img_insttargets := $(vdso_img_sodbg:%=install_%)
+vdso_img_insttargets := $(vdso_img_sodbg:%.dbg=install_%)
+
+$(MODLIB)/vdso: FORCE
@mkdir -p $(MODLIB)/vdso
+
+$(vdso_img_insttargets): install_%: $(obj)/% $(MODLIB)/vdso FORCE
+$(vdso_img_insttargets): install_%: $(obj)/%.dbg $(MODLIB)/vdso FORCE
$(call cmd,vdso_install)
-PHONY += vdso_install $(vdso-install-y)