diff options
Diffstat (limited to 'net/ax25')
| -rw-r--r-- | net/ax25/af_ax25.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index e7c69f4619e..3cd0a0dc91c 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; @@ -540,15 +545,16 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname, ax25_cb *ax25; struct net_device *dev; char devname[IFNAMSIZ]; - int opt, res = 0; + unsigned long opt; + int res = 0; if (level != SOL_AX25) return -ENOPROTOOPT; - if (optlen < sizeof(int)) + if (optlen < sizeof(unsigned int)) return -EINVAL; - if (get_user(opt, (int __user *)optval)) + if (get_user(opt, (unsigned int __user *)optval)) return -EFAULT; lock_sock(sk); @@ -571,7 +577,7 @@ 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 +586,7 @@ 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 +602,7 @@ 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 +610,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname, break; case AX25_IDLE: - if (opt < 0) { + if (opt > ULONG_MAX / (60 * HZ)) { res = -EINVAL; break; } @@ -612,7 +618,7 @@ static int ax25_setsockopt(struct socket *sock, int level, int optname, break; case AX25_BACKOFF: - if (opt < 0 || opt > 2) { + if (opt > 2) { res = -EINVAL; break; } |