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| author | Xing Song <xing.song@mediatek.com> | 2021-11-01 10:46:57 +0800 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2021-11-15 10:54:37 +0100 |
| commit | 77dfc2bc0bb4b8376ecd7a430f27a4a8fff6a5a0 (patch) | |
| tree | 6b6d8c6ec7339c92a829887be5a490e9a3a90204 /net/mac80211 | |
| parent | ce6b69749961426c6d822215ded9e67154e1ad4f (diff) | |
| download | linux-77dfc2bc0bb4b8376ecd7a430f27a4a8fff6a5a0.tar.gz linux-77dfc2bc0bb4b8376ecd7a430f27a4a8fff6a5a0.tar.bz2 linux-77dfc2bc0bb4b8376ecd7a430f27a4a8fff6a5a0.zip | |
mac80211: do not access the IV when it was stripped
ieee80211_get_keyid() will return false value if IV has been stripped,
such as return 0 for IP/ARP frames due to LLC header, and return -EINVAL
for disassociation frames due to its length... etc. Don't try to access
it if it's not present.
Signed-off-by: Xing Song <xing.song@mediatek.com>
Link: https://lore.kernel.org/r/20211101024657.143026-1-xing.song@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/rx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index fc5c608d02e2..6360c664259f 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1952,7 +1952,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) int keyid = rx->sta->ptk_idx; sta_ptk = rcu_dereference(rx->sta->ptk[keyid]); - if (ieee80211_has_protected(fc)) { + if (ieee80211_has_protected(fc) && + !(status->flag & RX_FLAG_IV_STRIPPED)) { cs = rx->sta->cipher_scheme; keyid = ieee80211_get_keyid(rx->skb, cs); |