This is a note to let you know that I've just added the patch titled
ath10k: Fix TKIP Michael MIC verification for PCIe
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ath10k-fix-tkip-michael-mic-verification-for-pcie.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0dc267b13f3a7e8424a898815dd357211b737330 Mon Sep 17 00:00:00 2001
From: Wen Gong <wgong@xxxxxxxxxxxxxx>
Date: Tue, 11 May 2021 20:02:56 +0200
Subject: ath10k: Fix TKIP Michael MIC verification for PCIe
From: Wen Gong <wgong@xxxxxxxxxxxxxx>
commit 0dc267b13f3a7e8424a898815dd357211b737330 upstream.
TKIP Michael MIC was not verified properly for PCIe cases since the
validation steps in ieee80211_rx_h_michael_mic_verify() in mac80211 did
not get fully executed due to unexpected flag values in
ieee80211_rx_status.
Fix this by setting the flags property to meet mac80211 expectations for
performing Michael MIC validation there. This fixes CVE-2020-26141. It
does the same as ath10k_htt_rx_proc_rx_ind_hl() for SDIO which passed
MIC verification case. This applies only to QCA6174/QCA9377 PCIe.
Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Wen Gong <wgong@xxxxxxxxxxxxxx>
Signed-off-by: Jouni Malinen <jouni@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210511200110.c3f1d42c6746.I795593fcaae941c471425b8c7d5f7bb185d29142@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Ashwin Dayanand Kamat <kashwindayan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/htt_rx.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -1645,6 +1645,11 @@ static void ath10k_htt_rx_h_mpdu(struct
skb_queue_walk(amsdu, msdu) {
ath10k_htt_rx_h_csum_offload(msdu);
+
+ if (frag && !fill_crypt_header &&
+ enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
+ status->flag &= ~RX_FLAG_MMIC_STRIPPED;
+
ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype,
is_decrypted);
@@ -1662,6 +1667,11 @@ static void ath10k_htt_rx_h_mpdu(struct
hdr = (void *)msdu->data;
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+
+ if (frag && !fill_crypt_header &&
+ enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
+ status->flag &= ~RX_FLAG_IV_STRIPPED &
+ ~RX_FLAG_MMIC_STRIPPED;
}
}
Patches currently in stable-queue which might be from wgong@xxxxxxxxxxxxxx are
queue-4.19/ath10k-fix-tkip-michael-mic-verification-for-pcie.patch
