diff options
| -rw-r--r-- | drivers/ptp/ptp_private.h | 1 | ||||
| -rw-r--r-- | drivers/ptp/ptp_sysfs.c | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ptp/ptp_private.h b/drivers/ptp/ptp_private.h index b352df4cd3f9..f329263f33aa 100644 --- a/drivers/ptp/ptp_private.h +++ b/drivers/ptp/ptp_private.h @@ -22,6 +22,7 @@ #define PTP_MAX_TIMESTAMPS 128 #define PTP_BUF_TIMESTAMPS 30 #define PTP_DEFAULT_MAX_VCLOCKS 20 +#define PTP_MAX_VCLOCKS_LIMIT (KMALLOC_MAX_SIZE/(sizeof(int))) #define PTP_MAX_CHANNELS 2048 enum { diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c index 6b1b8f57cd95..200eaf500696 100644 --- a/drivers/ptp/ptp_sysfs.c +++ b/drivers/ptp/ptp_sysfs.c @@ -284,7 +284,7 @@ static ssize_t max_vclocks_store(struct device *dev, size_t size; u32 max; - if (kstrtou32(buf, 0, &max) || max == 0) + if (kstrtou32(buf, 0, &max) || max == 0 || max > PTP_MAX_VCLOCKS_LIMIT) return -EINVAL; if (max == ptp->max_vclocks) |