diff options
| author | Mark Brown <broonie@linaro.org> | 2013-09-15 13:43:45 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-09-15 13:43:45 +0100 |
| commit | dafe3258c5449e2697097285c37c761915053eae (patch) | |
| tree | 3132efe10ff5766feae3311993cd7eef7e75d6f3 /drivers/net/tun.c | |
| parent | 15812f79511f4b94ee42f35c9095ba0c0cb5204c (diff) | |
| parent | 4ed4d44eb2192604716226a6f0edad02ab76101f (diff) | |
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-androidlsk-android-13.09
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 835d2bdc7655..7fd9c66dbe38 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; |