diff options
| author | Mark Brown <broonie@linaro.org> | 2013-09-15 13:43:21 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-09-15 13:43:21 +0100 |
| commit | 4ed4d44eb2192604716226a6f0edad02ab76101f (patch) | |
| tree | 74c2a4041e46b906d89c5880b9cdeb5d768827c4 /drivers/net/tun.c | |
| parent | cb03293a043ab9bda850fe143062bd304a9e2376 (diff) | |
| parent | 410dbb746130bc052bb3c7a337a86252874adbdf (diff) | |
Merge tag 'v3.10.12' into linux-linaro-lsklsk-13.09
This is the 3.10.12 stable release
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 2491eb28a8d2..7b54f4f052d0 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1076,8 +1076,9 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, u32 rxhash; if (!(tun->flags & TUN_NO_PI)) { - if ((len -= sizeof(pi)) > total_len) + if (len < sizeof(pi)) return -EINVAL; + len -= sizeof(pi); if (memcpy_fromiovecend((void *)&pi, iv, 0, sizeof(pi))) return -EFAULT; @@ -1085,8 +1086,9 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, } if (tun->flags & TUN_VNET_HDR) { - if ((len -= tun->vnet_hdr_sz) > total_len) + if (len < tun->vnet_hdr_sz) return -EINVAL; + len -= tun->vnet_hdr_sz; if (memcpy_fromiovecend((void *)&gso, iv, offset, sizeof(gso))) return -EFAULT; |