ipmi_si: Potential array underflow in hotmod_handler()
The "ival" variable needs to signed so that we don't read before the
start of the str[] array. This would only happen the user passed in a
module parameter that was just comprised of space characters.
Fixes: e80444ae4fc3 ("ipmi_si: Switch hotmod to use a platform device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Message-Id: <20190222195530.GA306@kadam>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
diff --git a/drivers/char/ipmi/ipmi_si_hotmod.c b/drivers/char/ipmi/ipmi_si_hotmod.c
index 1433055..03140f6 100644
--- a/drivers/char/ipmi/ipmi_si_hotmod.c
+++ b/drivers/char/ipmi/ipmi_si_hotmod.c
@@ -187,7 +187,8 @@
char *str = kstrdup(val, GFP_KERNEL), *curr, *next;
int rv;
struct ipmi_plat_data h;
- unsigned int len, ival;
+ unsigned int len;
+ int ival;
if (!str)
return -ENOMEM;
