From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Dan Carpenter <dan.carpenter@oracle.com>,
Tilman Schmidt <tilman@imap.cc>,
"David S. Miller" <davem@davemloft.net>
Subject: [ 15/36] isdn/gigaset: fix zero size border case in debug dump
Date: Tue, 12 Feb 2013 12:41:09 -0800 [thread overview]
Message-ID: <20130212203859.111143418@linuxfoundation.org> (raw)
In-Reply-To: <20130212203857.305594226@linuxfoundation.org>
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tilman Schmidt <tilman@imap.cc>
[ Upstream commit d721a1752ba544df8d7d36959038b26bc92bdf80 ]
If subtracting 12 from l leaves zero we'd do a zero size allocation,
leading to an oops later when we try to set the NUL terminator.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/isdn/gigaset/capi.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -264,6 +264,8 @@ static inline void dump_rawmsg(enum debu
CAPIMSG_APPID(data), CAPIMSG_MSGID(data), l,
CAPIMSG_CONTROL(data));
l -= 12;
+ if (l <= 0)
+ return;
dbgline = kmalloc(3 * l, GFP_ATOMIC);
if (!dbgline)
return;
next prev parent reply other threads:[~2013-02-12 20:41 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-12 20:40 [ 00/36] 3.4.31-stable review Greg Kroah-Hartman
2013-02-12 20:40 ` [ 01/36] rtlwifi: Fix the usage of the wrong variable in usb.c Greg Kroah-Hartman
2013-02-12 20:40 ` [ 02/36] rtlwifi: Fix scheduling while atomic bug Greg Kroah-Hartman
2013-02-12 20:40 ` [ 03/36] virtio_console: Dont access uninitialized data Greg Kroah-Hartman
2013-02-12 20:40 ` [ 04/36] kernel/resource.c: fix stack overflow in __reserve_region_with_split() Greg Kroah-Hartman
2013-02-12 20:40 ` [ 05/36] Bluetooth: Fix handling of unexpected SMP PDUs Greg Kroah-Hartman
2013-02-12 20:41 ` [ 06/36] efi: Make efi_enabled a function to query EFI facilities Greg Kroah-Hartman
2013-02-12 20:41 ` [ 07/36] samsung-laptop: Disable on EFI hardware Greg Kroah-Hartman
2013-02-12 20:41 ` [ 08/36] net: prevent setting ttl=0 via IP_TTL Greg Kroah-Hartman
2013-02-12 20:41 ` [ 09/36] ipv6: fix the noflags test in addrconf_get_prefix_route Greg Kroah-Hartman
2013-02-12 20:41 ` [ 10/36] MAINTAINERS: Stephen Hemminger email change Greg Kroah-Hartman
2013-02-12 20:41 ` [ 11/36] ipv6: fix header length calculation in ip6_append_data() Greg Kroah-Hartman
2013-02-12 20:41 ` [ 12/36] net: calxedaxgmac: throw away overrun frames Greg Kroah-Hartman
2013-02-12 20:41 ` [ 13/36] net/mlx4_en: Fix bridged vSwitch configuration for non SRIOV mode Greg Kroah-Hartman
2013-02-12 20:41 ` [ 14/36] net/mlx4_core: Set number of msix vectors under SRIOV mode to firmware defaults Greg Kroah-Hartman
2013-02-12 20:41 ` Greg Kroah-Hartman [this message]
2013-02-12 20:41 ` [ 16/36] netxen: fix off by one bug in netxen_release_tx_buffer() Greg Kroah-Hartman
2013-02-12 20:41 ` [ 17/36] r8169: remove the obsolete and incorrect AMD workaround Greg Kroah-Hartman
2013-02-12 20:41 ` [ 18/36] net: loopback: fix a dst refcounting issue Greg Kroah-Hartman
2013-02-12 20:41 ` [ 19/36] pktgen: correctly handle failures when adding a device Greg Kroah-Hartman
2013-02-12 20:41 ` [ 20/36] ipv6: do not create neighbor entries for local delivery Greg Kroah-Hartman
2013-02-12 20:41 ` [ 21/36] via-rhine: Fix bugs in NAPI support Greg Kroah-Hartman
2013-02-12 20:41 ` [ 22/36] packet: fix leakage of tx_ring memory Greg Kroah-Hartman
2013-02-12 20:41 ` [ 23/36] atm/iphase: rename fregt_t -> ffreg_t Greg Kroah-Hartman
2013-02-12 20:41 ` [ 24/36] sctp: refactor sctp_outq_teardown to insure proper re-initalization Greg Kroah-Hartman
2013-02-12 20:41 ` [ 25/36] net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree Greg Kroah-Hartman
2013-02-12 20:41 ` [ 26/36] net: sctp: sctp_endpoint_free: zero out secret key data Greg Kroah-Hartman
2013-02-12 20:41 ` [ 27/36] xen/netback: shutdown the ring if it contains garbage Greg Kroah-Hartman
2013-02-12 20:41 ` [ 28/36] xen/netback: dont leak pages on failure in xen_netbk_tx_check_gop Greg Kroah-Hartman
2013-02-12 20:41 ` [ 29/36] xen/netback: free already allocated memory on failure in xen_netbk_get_requests Greg Kroah-Hartman
2013-02-12 20:41 ` [ 30/36] netback: correct netbk_tx_err to handle wrap around Greg Kroah-Hartman
2013-02-12 20:41 ` [ 31/36] tcp: frto should not set snd_cwnd to 0 Greg Kroah-Hartman
2013-02-12 20:41 ` [ 32/36] tcp: fix for zero packets_in_flight was too broad Greg Kroah-Hartman
2013-02-12 20:41 ` [ 33/36] bridge: Pull ip header into skb->data before looking into ip header Greg Kroah-Hartman
2013-02-12 20:41 ` [ 34/36] tg3: Avoid null pointer dereference in tg3_interrupt in netconsole mode Greg Kroah-Hartman
2013-02-12 20:41 ` [ 35/36] tg3: Fix crc errors on jumbo frame receive Greg Kroah-Hartman
2013-02-12 20:41 ` [ 36/36] be2net: Fix to trim skb for padded vlan packets to workaround an ASIC Bug Greg Kroah-Hartman
2013-02-13 9:23 ` [ 00/36] 3.4.31-stable review Satoru Takeuchi
2013-02-13 15:52 ` Shuah Khan
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