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2025-06-24 16:03:39 +02:00
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package/kernel/mac80211/patches/rt2x00/073-rt2x00-clear-up-IV-s-on-key-removal.patch Normal file
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@@ -0,0 +1,46 @@
From 14d5e14c8a6c257eb322ddeb294ac4c243a7d2e1 Mon Sep 17 00:00:00 2001
From: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Fri, 23 Aug 2019 14:48:03 +0200
Subject: [PATCH 14/15] rt2x00: clear up IV's on key removal
After looking at code I realized that my previous fix
95844124385e ("rt2x00: clear IV's on start to fix AP mode regression")
was incomplete. We can still have wrong IV's after re-keyring.
To fix that, clear up IV's also on key removal.
Fixes: 710e6cc1595e ("rt2800: do not nullify initialization vector data")
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
tested-by: Emil Karlson <jekarl@iki.fi>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
.../net/wireless/ralink/rt2x00/rt2800lib.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -1665,13 +1665,18 @@ static void rt2800_config_wcid_attr_ciph
offset = MAC_IVEIV_ENTRY(key->hw_key_idx);
- rt2800_register_multiread(rt2x00dev, offset,
- &iveiv_entry, sizeof(iveiv_entry));
- if ((crypto->cipher == CIPHER_TKIP) ||
- (crypto->cipher == CIPHER_TKIP_NO_MIC) ||
- (crypto->cipher == CIPHER_AES))
- iveiv_entry.iv[3] |= 0x20;
- iveiv_entry.iv[3] |= key->keyidx << 6;
+ if (crypto->cmd == SET_KEY) {
+ rt2800_register_multiread(rt2x00dev, offset,
+ &iveiv_entry, sizeof(iveiv_entry));
+ if ((crypto->cipher == CIPHER_TKIP) ||
+ (crypto->cipher == CIPHER_TKIP_NO_MIC) ||
+ (crypto->cipher == CIPHER_AES))
+ iveiv_entry.iv[3] |= 0x20;
+ iveiv_entry.iv[3] |= key->keyidx << 6;
+ } else {
+ memset(&iveiv_entry, 0, sizeof(iveiv_entry));
+ }
+
rt2800_register_multiwrite(rt2x00dev, offset,
&iveiv_entry, sizeof(iveiv_entry));
}