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wifi: cfg80211: wext: fix IGTK key ID off-by-one

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[ Upstream commit c8d7f21ead727485ebf965e2b4d42d4a4f0840f6 ]

The IGTK key ID must be 4 or 5, but the code checks against
key ID + 1, so must check against 5/6 rather than 4/5. Fix
that.

Reported-by: Jouni Malinen <j@w1.fi>
Fixes: 08645126dd ("cfg80211: implement wext key handling")
Link: https://patch.msgid.link/20260209181220.362205-2-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Ulrich Hecht <uli@kernel.org>
This commit is contained in:
Johannes Berg
2026-02-09 19:12:20 +01:00
committed by Ulrich Hecht
parent 148a6fa9c4
commit f046dadb4d
1 changed files with 1 additions and 1 deletions
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2
net/wireless/wext-compat.c
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@ -677,7 +677,7 @@ static int cfg80211_wext_siwencodeext(struct net_device *dev,
idx = erq->flags & IW_ENCODE_INDEX;
if (cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
if (idx < 4 || idx > 5) {
if (idx < 5 || idx > 6) {
idx = wdev->wext.default_mgmt_key;
if (idx < 0)
return -EINVAL;