From: Viacheslav Bocharov <adeep@lexina.in>
To: Neil Armstrong <neil.armstrong@linaro.org>,
Kevin Hilman <khilman@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: [PATCH 1/4] firmware: meson-sm: change sprintf to scnprintf
Date: Thu, 2 Nov 2023 10:49:13 +0300 [thread overview]
Message-ID: <20231102074916.3280809-2-adeep@lexina.in> (raw)
In-Reply-To: <20231102074916.3280809-1-adeep@lexina.in>
Update sprintf in serial_show frunction to scnprintf command to
prevent sysfs buffer overflow (buffer always is PAGE_SIZE bytes).
Signed-off-by: Viacheslav Bocharov <adeep@lexina.in>
---
drivers/firmware/meson/meson_sm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/firmware/meson/meson_sm.c b/drivers/firmware/meson/meson_sm.c
index ed60f1103053..c1c694b485ee 100644
--- a/drivers/firmware/meson/meson_sm.c
+++ b/drivers/firmware/meson/meson_sm.c
@@ -265,7 +265,7 @@ static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
return ret;
}
- ret = sprintf(buf, "%12phN\n", &id_buf[SM_CHIP_ID_OFFSET]);
+ ret = scnprintf(buf, PAGE_SIZE, "%12phN\n", &id_buf[SM_CHIP_ID_OFFSET]);
kfree(id_buf);
--
2.34.1
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next prev parent reply other threads:[~2023-11-02 7:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-02 7:49 [PATCH 0/4] RFC: firmware: meson-sm: add chipid sysfs export Viacheslav Bocharov
2023-11-02 7:49 ` Viacheslav Bocharov [this message]
2023-11-02 7:49 ` [PATCH 2/4] firmware: meson_sm: Add chipid number sysfs entry Viacheslav Bocharov
2023-11-02 22:11 ` kernel test robot
2023-11-02 7:49 ` [PATCH 3/4] soc: amlogic: meson-gx-socinfo: export socinfo for use in other modules Viacheslav Bocharov
2023-11-02 9:23 ` Krzysztof Kozlowski
2023-11-02 7:49 ` [PATCH 4/4] firmware: meson_sm: use meson_gx_socinfo for compatibility Viacheslav Bocharov
2023-11-02 9:26 ` Krzysztof Kozlowski
2023-11-02 10:02 ` Viacheslav
2023-11-03 0:22 ` kernel test robot
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