diff options
Diffstat (limited to 'package/kernel/mac80211/patches/ath10k/302-ath10k-drop-fragments-with-multicast-DA-for-SDIO.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/ath10k/302-ath10k-drop-fragments-with-multicast-DA-for-SDIO.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath10k/302-ath10k-drop-fragments-with-multicast-DA-for-SDIO.patch b/package/kernel/mac80211/patches/ath10k/302-ath10k-drop-fragments-with-multicast-DA-for-SDIO.patch new file mode 100644 index 0000000000..85d9ce65e2 --- /dev/null +++ b/package/kernel/mac80211/patches/ath10k/302-ath10k-drop-fragments-with-multicast-DA-for-SDIO.patch @@ -0,0 +1,40 @@ +From: Wen Gong <wgong@codeaurora.org> +Date: Tue, 11 May 2021 20:02:54 +0200 +Subject: [PATCH] ath10k: drop fragments with multicast DA for SDIO + +Fragmentation is not used with multicast frames. Discard unexpected +fragments with multicast DA. This fixes CVE-2020-26145. + +Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049 + +Cc: stable@vger.kernel.org +Signed-off-by: Wen Gong <wgong@codeaurora.org> +Signed-off-by: Jouni Malinen <jouni@codeaurora.org> +Signed-off-by: Johannes Berg <johannes.berg@intel.com> +--- + +--- a/drivers/net/wireless/ath/ath10k/htt_rx.c ++++ b/drivers/net/wireless/ath/ath10k/htt_rx.c +@@ -2617,6 +2617,13 @@ static bool ath10k_htt_rx_proc_rx_frag_i + rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len); + rx_desc_info = __le32_to_cpu(rx_desc->info); + ++ hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len); ++ ++ if (is_multicast_ether_addr(hdr->addr1)) { ++ /* Discard the fragment with multicast DA */ ++ goto err; ++ } ++ + if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) { + spin_unlock_bh(&ar->data_lock); + return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb, +@@ -2624,8 +2631,6 @@ static bool ath10k_htt_rx_proc_rx_frag_i + HTT_RX_NON_TKIP_MIC); + } + +- hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len); +- + if (ieee80211_has_retry(hdr->frame_control)) + goto err; + |