[PATCH 1/4] firmware: meson-sm: change sprintf to scnprintf
Viacheslav Bocharov
adeep at lexina.in
Thu Nov 2 00:49:13 PDT 2023
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 at 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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