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| author | Ingo Molnar <mingo@kernel.org> | 2021-06-03 20:00:49 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-06-03 20:00:49 +0300 |
| commit | a9e906b71f963f19aabf7af59f73f37c929a5221 (patch) | |
| tree | 0228f82f4719160cfa4635c0c042c9c73fc2d2a5 /net/wireless/util.c | |
| parent | 475ea6c60279e9f2ddf7e4cf2648cd8ae0608361 (diff) | |
| parent | fcf6631f3736985ec89bdd76392d3c7bfb60119f (diff) | |
| download | linux-a9e906b71f963f19aabf7af59f73f37c929a5221.tar.xz | |
Merge branch 'sched/urgent' into sched/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/wireless/util.c')
| -rw-r--r-- | net/wireless/util.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index 382c5262d997..7ec021a610ae 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -542,7 +542,7 @@ EXPORT_SYMBOL(ieee80211_get_mesh_hdrlen); int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr, const u8 *addr, enum nl80211_iftype iftype, - u8 data_offset) + u8 data_offset, bool is_amsdu) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; struct { @@ -629,7 +629,7 @@ int ieee80211_data_to_8023_exthdr(struct sk_buff *skb, struct ethhdr *ehdr, skb_copy_bits(skb, hdrlen, &payload, sizeof(payload)); tmp.h_proto = payload.proto; - if (likely((ether_addr_equal(payload.hdr, rfc1042_header) && + if (likely((!is_amsdu && ether_addr_equal(payload.hdr, rfc1042_header) && tmp.h_proto != htons(ETH_P_AARP) && tmp.h_proto != htons(ETH_P_IPX)) || ether_addr_equal(payload.hdr, bridge_tunnel_header))) @@ -771,6 +771,9 @@ void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, remaining = skb->len - offset; if (subframe_len > remaining) goto purge; + /* mitigate A-MSDU aggregation injection attacks */ + if (ether_addr_equal(eth.h_dest, rfc1042_header)) + goto purge; offset += sizeof(struct ethhdr); last = remaining <= subframe_len + padding; |