diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2023-06-15 02:01:07 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-06-19 21:32:58 +0300 |
| commit | 6db5dd2bf4817a415daaf6a0226beadef1473d30 (patch) | |
| tree | e283160f99e035747553a7a7baba0a7bbfeda76d /net/ipv6 | |
| parent | b83d50f43165e8c21d580f40c57d8f6fe85adb59 (diff) | |
| download | linux-6db5dd2bf4817a415daaf6a0226beadef1473d30.tar.xz | |
ipv6: exthdrs: Remove redundant skb_headlen() check in ip6_parse_tlv().
ipv6_destopt_rcv() and ipv6_parse_hopopts() pulls these data
- Hop-by-Hop/Destination Options Header : 8
- Hdr Ext Len : skb_transport_header(skb)[1] << 3
and calls ip6_parse_tlv(), so it need not check if skb_headlen() is less
than skb_transport_offset(skb) + (skb_transport_header(skb)[1] << 3).
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/exthdrs.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c index dd23531387e3..202fc3aaa83c 100644 --- a/net/ipv6/exthdrs.c +++ b/net/ipv6/exthdrs.c @@ -126,9 +126,6 @@ static bool ip6_parse_tlv(bool hopbyhop, max_count = -max_count; } - if (skb_transport_offset(skb) + len > skb_headlen(skb)) - goto bad; - off += 2; len -= 2; |