From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Colin Ian King <colin.king@canonical.com>,
Marc Kleine-Budde <mkl@pengutronix.de>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.14 34/60] can: peak_usb: fix potential integer overflow on shift of a int
Date: Mon, 23 Nov 2020 13:22:16 +0100 [thread overview]
Message-ID: <20201123121806.691720950@linuxfoundation.org> (raw)
In-Reply-To: <20201123121805.028396732@linuxfoundation.org>
From: Colin Ian King <colin.king@canonical.com>
[ Upstream commit 8a68cc0d690c9e5730d676b764c6f059343b842c ]
The left shift of int 32 bit integer constant 1 is evaluated using 32 bit
arithmetic and then assigned to a signed 64 bit variable. In the case where
time_ref->adapter->ts_used_bits is 32 or more this can lead to an oveflow.
Avoid this by shifting using the BIT_ULL macro instead.
Fixes: bb4785551f64 ("can: usb: PEAK-System Technik USB adapters driver core")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20201105112427.40688-1-colin.king@canonical.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/can/usb/peak_usb/pcan_usb_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
index 9d78ba7776140..c9d86d50bf886 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -180,7 +180,7 @@ void peak_usb_get_ts_tv(struct peak_time_ref *time_ref, u32 ts,
if (time_ref->ts_dev_1 < time_ref->ts_dev_2) {
/* case when event time (tsw) wraps */
if (ts < time_ref->ts_dev_1)
- delta_ts = 1 << time_ref->adapter->ts_used_bits;
+ delta_ts = BIT_ULL(time_ref->adapter->ts_used_bits);
/* Otherwise, sync time counter (ts_dev_2) has wrapped:
* handle case when event time (tsn) hasn't.
@@ -192,7 +192,7 @@ void peak_usb_get_ts_tv(struct peak_time_ref *time_ref, u32 ts,
* tsn ts
*/
} else if (time_ref->ts_dev_1 < ts) {
- delta_ts = -(1 << time_ref->adapter->ts_used_bits);
+ delta_ts = -BIT_ULL(time_ref->adapter->ts_used_bits);
}
/* add delay between last sync and event timestamps */
--
2.27.0
next prev parent reply other threads:[~2020-11-23 12:28 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-23 12:21 [PATCH 4.14 00/60] 4.14.209-rc1 review Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 01/60] ah6: fix error return code in ah6_input() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 02/60] atm: nicstar: Unmap DMA on send error Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 03/60] bnxt_en: read EEPROM A2h address using page 0 Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 04/60] devlink: Add missing genlmsg_cancel() in devlink_nl_sb_port_pool_fill() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 05/60] inet_diag: Fix error path to cancel the meseage in inet_req_diag_fill() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 06/60] mlxsw: core: Use variable timeout for EMAD retries Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 07/60] net: b44: fix error return code in b44_init_one() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 08/60] net: bridge: add missing counters to ndo_get_stats64 callback Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 09/60] net: dsa: mv88e6xxx: Avoid VTU corruption on 6097 Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 10/60] net: Have netpoll bring-up DSA management interface Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 11/60] netlabel: fix our progress tracking in netlbl_unlabel_staticlist() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 12/60] netlabel: fix an uninitialized warning " Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 13/60] net/mlx4_core: Fix init_hca fields offset Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 14/60] net: x25: Increase refcnt of "struct x25_neigh" in x25_rx_call_request Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 15/60] qlcnic: fix error return code in qlcnic_83xx_restart_hw() Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 16/60] sctp: change to hold/put transport for proto_unreach_timer Greg Kroah-Hartman
2020-11-23 12:21 ` [PATCH 4.14 17/60] net/mlx5: Disable QoS when min_rates on all VFs are zero Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 18/60] net: usb: qmi_wwan: Set DTR quirk for MR400 Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 19/60] tcp: only postpone PROBE_RTT if RTT is < current min_rtt estimate Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 20/60] net: ftgmac100: Fix crash when removing driver Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 21/60] pinctrl: rockchip: enable gpio pclk for rockchip_gpio_to_irq Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 22/60] arm64: psci: Avoid printing in cpu_psci_cpu_die() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 23/60] vfs: remove lockdep bogosity in __sb_start_write Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 24/60] Input: adxl34x - clean up a data type in adxl34x_probe() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 25/60] MIPS: export has_transparent_hugepage() for modules Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 26/60] arm: dts: imx6qdl-udoo: fix rgmii phy-mode for ksz9031 phy Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 27/60] ARM: dts: imx50-evk: Fix the chip select 1 IOMUX Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 28/60] perf lock: Dont free "lock_seq_stat" if read_count isnt zero Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 29/60] can: af_can: prevent potential access of uninitialized member in can_rcv() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 30/60] can: af_can: prevent potential access of uninitialized member in canfd_rcv() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 31/60] can: dev: can_restart(): post buffer from the right context Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 32/60] can: ti_hecc: Fix memleak in ti_hecc_probe Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 33/60] can: mcba_usb: mcba_usb_start_xmit(): first fill skb, then pass to can_put_echo_skb() Greg Kroah-Hartman
2020-11-23 12:22 ` Greg Kroah-Hartman [this message]
2020-11-23 12:22 ` [PATCH 4.14 35/60] can: m_can: m_can_handle_state_change(): fix state change Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 36/60] ASoC: qcom: lpass-platform: Fix memory leak Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 37/60] MIPS: Alchemy: Fix memleak in alchemy_clk_setup_cpu Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 38/60] regulator: ti-abb: Fix array out of bound read access on the first transition Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 39/60] xfs: revert "xfs: fix rmap key and record comparison functions" Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 40/60] libfs: fix error cast of negative value in simple_attr_write() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 41/60] powerpc/uaccess-flush: fix missing includes in kup-radix.h Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 42/60] speakup: Do not let the line discipline be used several times Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 43/60] ALSA: ctl: fix error path at adding user-defined element set Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 44/60] ALSA: mixart: Fix mutex deadlock Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 45/60] tty: serial: imx: keep console clocks always on Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 46/60] efivarfs: fix memory leak in efivarfs_create() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 47/60] staging: rtl8723bs: Add 024c:0627 to the list of SDIO device-ids Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 48/60] ext4: fix bogus warning in ext4_update_dx_flag() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 49/60] iio: accel: kxcjk1013: Replace is_smo8500_device with an acpi_type enum Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 50/60] iio: accel: kxcjk1013: Add support for KIOX010A ACPI DSM for setting tablet-mode Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 51/60] regulator: fix memory leak with repeated set_machine_constraints() Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 52/60] regulator: avoid resolve_supply() infinite recursion Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 53/60] regulator: workaround self-referent regulators Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 54/60] xtensa: disable preemption around cache alias management calls Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 55/60] mac80211: minstrel: remove deferred sampling code Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 56/60] mac80211: minstrel: fix tx status processing corner case Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 57/60] mac80211: free sta in sta_info_insert_finish() on errors Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 58/60] s390/cpum_sf.c: fix file permission for cpum_sfb_size Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 59/60] s390/dasd: fix null pointer dereference for ERP requests Greg Kroah-Hartman
2020-11-23 12:22 ` [PATCH 4.14 60/60] x86/microcode/intel: Check patch signature before saving microcode for early loading Greg Kroah-Hartman
2020-11-23 20:54 ` [PATCH 4.14 00/60] 4.14.209-rc1 review Jon Hunter
2020-11-23 22:35 ` Guenter Roeck
2020-11-24 7:21 ` Naresh Kamboju
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