From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Josh Poimboeuf <jpoimboe@redhat.com>,
Jeremy Cline <jcline@redhat.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH 4.17 15/31] net: socket: Fix potential spectre v1 gadget in sock_is_registered
Date: Sat, 4 Aug 2018 11:00:50 +0200 [thread overview]
Message-ID: <20180804082633.410038863@linuxfoundation.org> (raw)
In-Reply-To: <20180804082632.304529527@linuxfoundation.org>
4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jeremy Cline <jcline@redhat.com>
commit e978de7a6d382ec378830ca2cf38e902df0b6d84 upstream.
'family' can be a user-controlled value, so sanitize it after the bounds
check to avoid speculative out-of-bounds access.
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jeremy Cline <jcline@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/socket.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/socket.c
+++ b/net/socket.c
@@ -2694,7 +2694,8 @@ EXPORT_SYMBOL(sock_unregister);
bool sock_is_registered(int family)
{
- return family < NPROTO && rcu_access_pointer(net_families[family]);
+ return family < NPROTO &&
+ rcu_access_pointer(net_families[array_index_nospec(family, NPROTO)]);
}
static int __init sock_init(void)
next prev parent reply other threads:[~2018-08-04 9:02 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-04 9:00 [PATCH 4.17 00/31] 4.17.13-stable review Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 01/31] bonding: avoid lockdep confusion in bond_get_stats() Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 02/31] inet: frag: enforce memory limits earlier Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 03/31] ipv4: frags: handle possible skb truesize change Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 04/31] net: dsa: Do not suspend/resume closed slave_dev Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 05/31] netlink: Fix spectre v1 gadget in netlink_create() Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 06/31] net: stmmac: Fix WoL for PCI-based setups Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 07/31] rxrpc: Fix user call ID check in rxrpc_service_prealloc_one Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 08/31] net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 09/31] net/mlx5e: Set port trust mode to PCP as default Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 10/31] net/mlx5e: IPoIB, Set the netdevice sw mtu in ipoib enhanced flow Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 11/31] squashfs: more metadata hardening Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 13/31] can: ems_usb: Fix memory leak on ems_usb_disconnect() Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 14/31] net: socket: fix potential spectre v1 gadget in socketcall Greg Kroah-Hartman
2018-08-04 9:00 ` Greg Kroah-Hartman [this message]
2018-08-04 9:00 ` [PATCH 4.17 16/31] virtio_balloon: fix another race between migration and ballooning Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 17/31] x86/efi: Access EFI MMIO data as unencrypted when SEV is active Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 18/31] x86/apic: Future-proof the TSC_DEADLINE quirk for SKX Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 19/31] x86/entry/64: Remove %ebx handling from error_entry/exit Greg Kroah-Hartman
2018-08-04 9:00 ` Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 20/31] kvm: x86: vmx: fix vpid leak Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 21/31] audit: fix potential null dereference context->module.name Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 23/31] userfaultfd: remove uffd flags from vma->vm_flags if UFFD_EVENT_FORK fails Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 24/31] iwlwifi: add more card IDs for 9000 series Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 26/31] RDMA/uverbs: Expand primary and alt AV port checks Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 27/31] crypto: padlock-aes - Fix Nano workaround data corruption Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 28/31] drm/vc4: Reset ->{x, y}_scaling[1] when dealing with uniplanar formats Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 29/31] drm/atomic: Check old_plane_state->crtc in drm_atomic_helper_async_check() Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 30/31] drm/atomic: Initialize variables in drm_atomic_helper_async_check() to make gcc happy Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 31/31] scsi: sg: fix minor memory leak in error path Greg Kroah-Hartman
2018-08-04 14:49 ` [PATCH 4.17 00/31] 4.17.13-stable review Guenter Roeck
2018-08-05 6:54 ` Greg Kroah-Hartman
2018-08-05 11:50 ` Naresh Kamboju
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