From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Evgeny Novikov <novikov@ispras.ru>,
Guenter Roeck <linux@roeck-us.net>,
Sasha Levin <sashal@kernel.org>,
linux-hwmon@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-aspeed@lists.ozlabs.org
Subject: [PATCH AUTOSEL 4.19 09/19] hwmon: (aspeed-pwm-tacho) Avoid possible buffer overflow
Date: Mon, 20 Jul 2020 17:38:40 -0400 [thread overview]
Message-ID: <20200720213851.407715-9-sashal@kernel.org> (raw)
In-Reply-To: <20200720213851.407715-1-sashal@kernel.org>
From: Evgeny Novikov <novikov@ispras.ru>
[ Upstream commit bc4071aafcf4d0535ee423b69167696d6c03207d ]
aspeed_create_fan() reads a pwm_port value using of_property_read_u32().
If pwm_port will be more than ARRAY_SIZE(pwm_port_params), there will be
a buffer overflow in
aspeed_create_pwm_port()->aspeed_set_pwm_port_enable(). The patch fixes
the potential buffer overflow.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Link: https://lore.kernel.org/r/20200703111518.9644-1-novikov@ispras.ru
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hwmon/aspeed-pwm-tacho.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/hwmon/aspeed-pwm-tacho.c b/drivers/hwmon/aspeed-pwm-tacho.c
index 5e449eac788a1..a43fa730a513b 100644
--- a/drivers/hwmon/aspeed-pwm-tacho.c
+++ b/drivers/hwmon/aspeed-pwm-tacho.c
@@ -880,6 +880,8 @@ static int aspeed_create_fan(struct device *dev,
ret = of_property_read_u32(child, "reg", &pwm_port);
if (ret)
return ret;
+ if (pwm_port >= ARRAY_SIZE(pwm_port_params))
+ return -EINVAL;
aspeed_create_pwm_port(priv, (u8)pwm_port);
ret = of_property_count_u8_elems(child, "cooling-levels");
--
2.25.1
next prev parent reply other threads:[~2020-07-20 21:39 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 21:38 [PATCH AUTOSEL 4.19 01/19] HID: i2c-hid: add Mediacom FlexBook edge13 to descriptor override Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 02/19] HID: alps: support devices with report id 2 Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 03/19] HID: steam: fixes race in handling device list Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 04/19] HID: apple: Disable Fn-key key-re-mapping on clone keyboards Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 05/19] dmaengine: tegra210-adma: Fix runtime PM imbalance on error Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 06/19] Input: add `SW_MACHINE_COVER` Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 07/19] spi: mediatek: use correct SPI_CFG2_REG MACRO Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 08/19] regmap: dev_get_regmap_match(): fix string comparison Sasha Levin
2020-07-20 21:38 ` Sasha Levin [this message]
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 10/19] dmaengine: ioat setting ioat timeout as module parameter Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 11/19] Input: synaptics - enable InterTouch for ThinkPad X1E 1st gen Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 12/19] Input: elan_i2c - only increment wakeup count on touch Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 13/19] usb: gadget: udc: gr_udc: fix memleak on error handling path in gr_ep_init() Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 14/19] hwmon: (adm1275) Make sure we are reading enough data for different chips Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 15/19] hwmon: (scmi) Fix potential buffer overflow in scmi_hwmon_probe() Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 16/19] arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 17/19] x86: math-emu: Fix up 'cmp' insn for clang ias Sasha Levin
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 18/19] RISC-V: Upgrade smp_mb__after_spinlock() to iorw,iorw Sasha Levin
2020-07-26 18:36 ` Palmer Dabbelt
2020-07-20 21:38 ` [PATCH AUTOSEL 4.19 19/19] SUNRPC reverting d03727b248d0 ("NFSv4 fix CLOSE not waiting for direct IO compeletion") Sasha Levin
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