3.15.3
This commit is contained in:
Justin M. Forbes
parent
ea3f980e15
commit
c67f8002d6
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@ -1,48 +0,0 @@
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Bugzilla: 1112975
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Upstream-status: 3.16 and CC'd to stable
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From f8567a3845ac05bb28f3c1b478ef752762bd39ef Mon Sep 17 00:00:00 2001
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From: Benjamin LaHaise <bcrl@kvack.org>
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Date: Tue, 24 Jun 2014 13:12:55 -0400
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Subject: [PATCH] aio: fix aio request leak when events are reaped by userspace
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The aio cleanups and optimizations by kmo that were merged into the 3.10
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tree added a regression for userspace event reaping. Specifically, the
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reference counts are not decremented if the event is reaped in userspace,
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leading to the application being unable to submit further aio requests.
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This patch applies to 3.12+. A separate backport is required for 3.10/3.11.
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This issue was uncovered as part of CVE-2014-0206.
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Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
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Cc: stable@vger.kernel.org
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Cc: Kent Overstreet <kmo@daterainc.com>
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Cc: Mateusz Guzik <mguzik@redhat.com>
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Cc: Petr Matousek <pmatouse@redhat.com>
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---
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fs/aio.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/fs/aio.c b/fs/aio.c
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index 4f078c054b41..6a9c7e489adf 100644
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--- a/fs/aio.c
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+++ b/fs/aio.c
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@@ -1021,6 +1021,7 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
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/* everything turned out well, dispose of the aiocb. */
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kiocb_free(iocb);
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+ put_reqs_available(ctx, 1);
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/*
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* We have to order our ring_info tail store above and test
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@@ -1100,8 +1101,6 @@ static long aio_read_events_ring(struct kioctx *ctx,
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flush_dcache_page(ctx->ring_pages[0]);
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pr_debug("%li h%u t%u\n", ret, head, tail);
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-
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- put_reqs_available(ctx, ret);
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out:
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mutex_unlock(&ctx->ring_lock);
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--
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1.9.3
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@ -1,46 +0,0 @@
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Bugzilla: 1112975
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Upstream-status: 3.16 and CC'd to stable
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From edfbbf388f293d70bf4b7c0bc38774d05e6f711a Mon Sep 17 00:00:00 2001
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From: Benjamin LaHaise <bcrl@kvack.org>
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Date: Tue, 24 Jun 2014 13:32:51 -0400
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Subject: [PATCH] aio: fix kernel memory disclosure in io_getevents()
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introduced in v3.10
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A kernel memory disclosure was introduced in aio_read_events_ring() in v3.10
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by commit a31ad380bed817aa25f8830ad23e1a0480fef797. The changes made to
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aio_read_events_ring() failed to correctly limit the index into
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ctx->ring_pages[], allowing an attacked to cause the subsequent kmap() of
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an arbitrary page with a copy_to_user() to copy the contents into userspace.
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This vulnerability has been assigned CVE-2014-0206. Thanks to Mateusz and
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Petr for disclosing this issue.
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This patch applies to v3.12+. A separate backport is needed for 3.10/3.11.
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Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
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Cc: Mateusz Guzik <mguzik@redhat.com>
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Cc: Petr Matousek <pmatouse@redhat.com>
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Cc: Kent Overstreet <kmo@daterainc.com>
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Cc: Jeff Moyer <jmoyer@redhat.com>
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Cc: stable@vger.kernel.org
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---
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fs/aio.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/fs/aio.c b/fs/aio.c
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index 6a9c7e489adf..955947ef3e02 100644
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--- a/fs/aio.c
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+++ b/fs/aio.c
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@@ -1063,6 +1063,9 @@ static long aio_read_events_ring(struct kioctx *ctx,
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if (head == tail)
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goto out;
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+ head %= ctx->nr_events;
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+ tail %= ctx->nr_events;
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+
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while (ret < nr) {
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long avail;
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struct io_event *ev;
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--
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1.9.3
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19
kernel.spec
19
kernel.spec
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@ -74,7 +74,7 @@ Summary: The Linux kernel
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%if 0%{?released_kernel}
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# Do we have a -stable update to apply?
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%define stable_update 2
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%define stable_update 3
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# Is it a -stable RC?
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%define stable_rc 0
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# Set rpm version accordingly
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@ -749,13 +749,6 @@ Patch25102: intel_pstate-Fix-setting-VID.patch
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Patch25103: intel_pstate-dont-touch-turbo-bit-if-turbo-disabled-or-unavailable.patch
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Patch25104: intel_pstate-Update-documentation-of-max-min_perf_pct-sysfs-files.patch
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#CVE-2014-4508 rhbz 1111590 1112073
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Patch25106: x86_32-entry-Do-syscall-exit-work-on-badsys.patch
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#CVE-2014-0206 rhbz 1094602 1112975
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Patch25107: aio-fix-kernel-memory-disclosure-in-io_getevents-int.patch
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Patch25108: aio-fix-aio-request-leak-when-events-are-reaped-by-u.patch
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Patch25109: revert-input-wacom-testing-result-shows-get_report-is-unnecessary.patch
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#rhbz 1021036, submitted upstream
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@ -1475,13 +1468,6 @@ ApplyPatch intel_pstate-Fix-setting-VID.patch
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ApplyPatch intel_pstate-dont-touch-turbo-bit-if-turbo-disabled-or-unavailable.patch
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ApplyPatch intel_pstate-Update-documentation-of-max-min_perf_pct-sysfs-files.patch
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#CVE-2014-4508 rhbz 1111590 1112073
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ApplyPatch x86_32-entry-Do-syscall-exit-work-on-badsys.patch
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#CVE-2014-0206 rhbz 1094602 1112975
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ApplyPatch aio-fix-kernel-memory-disclosure-in-io_getevents-int.patch
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ApplyPatch aio-fix-aio-request-leak-when-events-are-reaped-by-u.patch
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ApplyPatch revert-input-wacom-testing-result-shows-get_report-is-unnecessary.patch
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#rhbz 1021036, submitted upstream
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@ -2304,6 +2290,9 @@ fi
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# ||----w |
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# || ||
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%changelog
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* Tue Jul 1 2014 Justin M. Forbes <jforbes@fedoraproject.org>
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- Linux v3.15.3
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* Tue Jul 1 2014 Hans de Goede <hdegoede@redhat.com>
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- Add min/max quirk for the ThinkPad Edge E531 touchpad (rhbz#1114768)
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2
sources
2
sources
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@ -1,2 +1,2 @@
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97ca1625bb40368dc41b9a7971549071 linux-3.15.tar.xz
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53eb7e210c9330021e60ffe2c5081e19 patch-3.15.2.xz
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a2057d9b11f013482e2a7072552f3f02 patch-3.15.3.xz
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@ -1,130 +0,0 @@
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Bugzilla: 1112073
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Upstream-status: Sent for 3.16 and CC'd to stable
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Mon, 23 Jun 2014 14:22:20 -0700 (PDT)
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From: Andy Lutomirski <luto@amacapital.net>
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Cc: "H. Peter Anvin" <hpa@zytor.com>,
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Richard Weinberger <richard@nod.at>, X86 ML <x86@kernel.org>,
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Eric Paris <eparis@redhat.com>,
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Linux Kernel <linux-kernel@vger.kernel.org>,
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security@kernel.org, Steven Rostedt <rostedt@goodmis.org>,
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Borislav Petkov <bp@alien8.de>,
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=?UTF-8?q?Toralf=20F=C3=B6rster?= <toralf.foerster@gmx.de>,
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Andy Lutomirski <luto@amacapital.net>, stable@vger.kernel.org,
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Roland McGrath <roland@redhat.com>
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Subject: [PATCH] x86_32,entry: Do syscall exit work on badsys (CVE-2014-4508)
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Date: Mon, 23 Jun 2014 14:22:15 -0700
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Message-Id: <e09c499eade6fc321266dd6b54da7beb28d6991c.1403558229.git.luto@amacapital.net>
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References: <CA+5PVA70nFS8JZkL0-Q-1HjFHT5NA04275_M4WstjQMrpT+hrQ@mail.gmail.com>
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The bad syscall nr paths are their own incomprehensible route
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through the entry control flow. Rearrange them to work just like
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syscalls that return -ENOSYS.
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This fixes an OOPS in the audit code when fast-path auditing is
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enabled and sysenter gets a bad syscall nr (CVE-2014-4508).
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This has probably been broken since Linux 2.6.27:
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af0575bba0 i386 syscall audit fast-path
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Cc: stable@vger.kernel.org
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Cc: Roland McGrath <roland@redhat.com>
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Reported-by: Toralf Förster <toralf.foerster@gmx.de>
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Signed-off-by: Andy Lutomirski <luto@amacapital.net>
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---
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I realize that the syscall audit fast path and badsys code, on 32-bit
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x86 no less, is possibly one of the least fun things in the kernel to
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review, but this is still a real security bug and should get fixed :(
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So I'm cc-ing a bunch of people and maybe someone will review it.
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arch/x86/kernel/entry_32.S | 10 ++++++++--
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1 file changed, 8 insertions(+), 2 deletions(-)
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diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
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index a2a4f46..f4258a5 100644
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--- a/arch/x86/kernel/entry_32.S
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+++ b/arch/x86/kernel/entry_32.S
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@@ -431,9 +431,10 @@ sysenter_past_esp:
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jnz sysenter_audit
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sysenter_do_call:
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cmpl $(NR_syscalls), %eax
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- jae syscall_badsys
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+ jae sysenter_badsys
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call *sys_call_table(,%eax,4)
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movl %eax,PT_EAX(%esp)
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+sysenter_after_call:
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LOCKDEP_SYS_EXIT
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DISABLE_INTERRUPTS(CLBR_ANY)
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TRACE_IRQS_OFF
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@@ -688,7 +689,12 @@ END(syscall_fault)
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syscall_badsys:
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movl $-ENOSYS,PT_EAX(%esp)
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- jmp resume_userspace
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+ jmp syscall_exit
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+END(syscall_badsys)
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+
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+sysenter_badsys:
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+ movl $-ENOSYS,PT_EAX(%esp)
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+ jmp sysenter_after_call
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END(syscall_badsys)
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CFI_ENDPROC
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/*
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--
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1.9.3
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--
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