diff options
| -rw-r--r-- | fs/ioctl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ioctl.c b/fs/ioctl.c index 26aba0942a98..c415668c86d4 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -582,6 +582,10 @@ static int ioctl_file_dedupe_range(struct file *file, void __user *arg) } size = offsetof(struct file_dedupe_range __user, info[count]); + if (size > PAGE_SIZE) { + ret = -ENOMEM; + goto out; + } same = memdup_user(argp, size); if (IS_ERR(same)) { |