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-rw-r--r--net/ax25/af_ax25.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index e7c69f4..b863c18 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -402,14 +402,14 @@ static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
break;
case AX25_T1:
- if (ax25_ctl.arg < 1)
+ if (ax25_ctl.arg < 1 || ax25_ctl.arg > ULONG_MAX / HZ)
goto einval_put;
ax25->rtt = (ax25_ctl.arg * HZ) / 2;
ax25->t1 = ax25_ctl.arg * HZ;
break;
case AX25_T2:
- if (ax25_ctl.arg < 1)
+ if (ax25_ctl.arg < 1 || ax25_ctl.arg > ULONG_MAX / HZ)
goto einval_put;
ax25->t2 = ax25_ctl.arg * HZ;
break;
@@ -422,10 +422,15 @@ static int ax25_ctl_ioctl(const unsigned int cmd, void __user *arg)
break;
case AX25_T3:
+ if (ax25_ctl.arg > ULONG_MAX / HZ)
+ goto einval_put;
ax25->t3 = ax25_ctl.arg * HZ;
break;
case AX25_IDLE:
+ if (ax25_ctl.arg > ULONG_MAX / (60 * HZ))
+ goto einval_put;
+
ax25->idle = ax25_ctl.arg * 60 * HZ;
break;
@@ -571,7 +576,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname,
break;
case AX25_T1:
- if (opt < 1) {
+ if (opt < 1 || opt > ULONG_MAX / HZ) {
res = -EINVAL;
break;
}
@@ -580,7 +585,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname,
break;
case AX25_T2:
- if (opt < 1) {
+ if (opt < 1 || opt > ULONG_MAX / HZ) {
res = -EINVAL;
break;
}
@@ -596,7 +601,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname,
break;
case AX25_T3:
- if (opt < 1) {
+ if (opt < 1 || opt > ULONG_MAX / HZ) {
res = -EINVAL;
break;
}
@@ -604,7 +609,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname,
break;
case AX25_IDLE:
- if (opt < 0) {
+ if (opt < 0 || opt > ULONG_MAX / (60 * HZ)) {
res = -EINVAL;
break;
}
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