May 2021 - Linux-stable-mirror

FAILED: patch "[PATCH] ath10k: drop MPDU which has discard flag set by firmware for" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 079a108feba474b4b32bd3471db03e11f2f83b81 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)codeaurora.org> Date: Tue, 11 May 2021 20:02:55 +0200 Subject: [PATCH] ath10k: drop MPDU which has discard flag set by firmware for SDIO When the discard flag is set by the firmware for an MPDU, it should be dropped. This allows a mitigation for CVE-2020-24588 to be implemented in the firmware. Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049 Cc: stable(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.11968c725b5c.Idd166365ebea2771c0c0… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index b1d93ff5215a..12451ab66a19 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -2312,6 +2312,11 @@ static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt, fw_desc = &rx->fw_desc; rx_desc_len = fw_desc->len; + if (fw_desc->u.bits.discard) { + ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n"); + goto err; + } + /* I have not yet seen any case where num_mpdu_ranges > 1. * qcacld does not seem handle that case either, so we introduce the * same limitiation here as well. diff --git a/drivers/net/wireless/ath/ath10k/rx_desc.h b/drivers/net/wireless/ath/ath10k/rx_desc.h index f2b6bf8f0d60..705b6295e466 100644 --- a/drivers/net/wireless/ath/ath10k/rx_desc.h +++ b/drivers/net/wireless/ath/ath10k/rx_desc.h @@ -1282,7 +1282,19 @@ struct fw_rx_desc_base { #define FW_RX_DESC_UDP (1 << 6) struct fw_rx_desc_hl { - u8 info0; + union { + struct { + u8 discard:1, + forward:1, + any_err:1, + dup_err:1, + reserved:1, + inspect:1, + extension:2; + } bits; + u8 info0; + } u; + u8 version; u8 len; u8 flags;

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for SDIO" failed to apply to 4.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 40e7462dad6f3d06efdb17d26539e61ab6e34db1 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)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(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.9ca6ca7945a9.I1e18b514590af17c155b… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index cb04848ed5cb..b1d93ff5215a 100644 --- 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_ind_hl(struct ath10k_htt *htt, 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_ind_hl(struct ath10k_htt *htt, 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;

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for SDIO" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 40e7462dad6f3d06efdb17d26539e61ab6e34db1 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)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(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.9ca6ca7945a9.I1e18b514590af17c155b… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index cb04848ed5cb..b1d93ff5215a 100644 --- 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_ind_hl(struct ath10k_htt *htt, 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_ind_hl(struct ath10k_htt *htt, 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;

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for SDIO" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 40e7462dad6f3d06efdb17d26539e61ab6e34db1 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)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(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.9ca6ca7945a9.I1e18b514590af17c155b… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index cb04848ed5cb..b1d93ff5215a 100644 --- 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_ind_hl(struct ath10k_htt *htt, 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_ind_hl(struct ath10k_htt *htt, 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;

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for SDIO" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 40e7462dad6f3d06efdb17d26539e61ab6e34db1 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)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(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.9ca6ca7945a9.I1e18b514590af17c155b… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index cb04848ed5cb..b1d93ff5215a 100644 --- 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_ind_hl(struct ath10k_htt *htt, 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_ind_hl(struct ath10k_htt *htt, 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;

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for PCIe" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 65c415a144ad8132b6a6d97d4a1919ffc728e2d1 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)codeaurora.org> Date: Tue, 11 May 2021 20:02:53 +0200 Subject: [PATCH] ath10k: drop fragments with multicast DA for PCIe Fragmentation is not used with multicast frames. Discard unexpected fragments with multicast DA. This fixes CVE-2020-26145. Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1 Cc: stable(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.5a0bd289bda8.Idd6ebea20038fb1cfee6… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index f1e5bce8b14f..cb04848ed5cb 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1768,6 +1768,16 @@ static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, return pn; } +static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, + struct sk_buff *skb, + u16 offset) +{ + struct ieee80211_hdr *hdr; + + hdr = (struct ieee80211_hdr *)(skb->data + offset); + return !is_multicast_ether_addr(hdr->addr1); +} + static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, struct sk_buff *skb, u16 peer_id, @@ -1839,7 +1849,7 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, bool is_decrypted; bool is_mgmt; u32 attention; - bool frag_pn_check = true; + bool frag_pn_check = true, multicast_check = true; if (skb_queue_empty(amsdu)) return; @@ -1946,13 +1956,20 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 0, enctype); - if (!frag_pn_check) { - /* Discard the fragment with invalid PN */ + if (frag) + multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, + msdu, + 0); + + if (!frag_pn_check || !multicast_check) { + /* Discard the fragment with invalid PN or multicast DA + */ temp = msdu->prev; __skb_unlink(msdu, amsdu); dev_kfree_skb_any(msdu); msdu = temp; frag_pn_check = true; + multicast_check = true; continue; }

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for PCIe" failed to apply to 4.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 65c415a144ad8132b6a6d97d4a1919ffc728e2d1 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)codeaurora.org> Date: Tue, 11 May 2021 20:02:53 +0200 Subject: [PATCH] ath10k: drop fragments with multicast DA for PCIe Fragmentation is not used with multicast frames. Discard unexpected fragments with multicast DA. This fixes CVE-2020-26145. Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1 Cc: stable(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.5a0bd289bda8.Idd6ebea20038fb1cfee6… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index f1e5bce8b14f..cb04848ed5cb 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1768,6 +1768,16 @@ static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, return pn; } +static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, + struct sk_buff *skb, + u16 offset) +{ + struct ieee80211_hdr *hdr; + + hdr = (struct ieee80211_hdr *)(skb->data + offset); + return !is_multicast_ether_addr(hdr->addr1); +} + static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, struct sk_buff *skb, u16 peer_id, @@ -1839,7 +1849,7 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, bool is_decrypted; bool is_mgmt; u32 attention; - bool frag_pn_check = true; + bool frag_pn_check = true, multicast_check = true; if (skb_queue_empty(amsdu)) return; @@ -1946,13 +1956,20 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 0, enctype); - if (!frag_pn_check) { - /* Discard the fragment with invalid PN */ + if (frag) + multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, + msdu, + 0); + + if (!frag_pn_check || !multicast_check) { + /* Discard the fragment with invalid PN or multicast DA + */ temp = msdu->prev; __skb_unlink(msdu, amsdu); dev_kfree_skb_any(msdu); msdu = temp; frag_pn_check = true; + multicast_check = true; continue; }

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for PCIe" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 65c415a144ad8132b6a6d97d4a1919ffc728e2d1 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)codeaurora.org> Date: Tue, 11 May 2021 20:02:53 +0200 Subject: [PATCH] ath10k: drop fragments with multicast DA for PCIe Fragmentation is not used with multicast frames. Discard unexpected fragments with multicast DA. This fixes CVE-2020-26145. Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1 Cc: stable(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.5a0bd289bda8.Idd6ebea20038fb1cfee6… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index f1e5bce8b14f..cb04848ed5cb 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1768,6 +1768,16 @@ static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, return pn; } +static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, + struct sk_buff *skb, + u16 offset) +{ + struct ieee80211_hdr *hdr; + + hdr = (struct ieee80211_hdr *)(skb->data + offset); + return !is_multicast_ether_addr(hdr->addr1); +} + static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, struct sk_buff *skb, u16 peer_id, @@ -1839,7 +1849,7 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, bool is_decrypted; bool is_mgmt; u32 attention; - bool frag_pn_check = true; + bool frag_pn_check = true, multicast_check = true; if (skb_queue_empty(amsdu)) return; @@ -1946,13 +1956,20 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 0, enctype); - if (!frag_pn_check) { - /* Discard the fragment with invalid PN */ + if (frag) + multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, + msdu, + 0); + + if (!frag_pn_check || !multicast_check) { + /* Discard the fragment with invalid PN or multicast DA + */ temp = msdu->prev; __skb_unlink(msdu, amsdu); dev_kfree_skb_any(msdu); msdu = temp; frag_pn_check = true; + multicast_check = true; continue; }

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: drop fragments with multicast DA for PCIe" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 65c415a144ad8132b6a6d97d4a1919ffc728e2d1 Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)codeaurora.org> Date: Tue, 11 May 2021 20:02:53 +0200 Subject: [PATCH] ath10k: drop fragments with multicast DA for PCIe Fragmentation is not used with multicast frames. Discard unexpected fragments with multicast DA. This fixes CVE-2020-26145. Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1 Cc: stable(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.5a0bd289bda8.Idd6ebea20038fb1cfee6… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index f1e5bce8b14f..cb04848ed5cb 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1768,6 +1768,16 @@ static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, return pn; } +static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar, + struct sk_buff *skb, + u16 offset) +{ + struct ieee80211_hdr *hdr; + + hdr = (struct ieee80211_hdr *)(skb->data + offset); + return !is_multicast_ether_addr(hdr->addr1); +} + static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, struct sk_buff *skb, u16 peer_id, @@ -1839,7 +1849,7 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, bool is_decrypted; bool is_mgmt; u32 attention; - bool frag_pn_check = true; + bool frag_pn_check = true, multicast_check = true; if (skb_queue_empty(amsdu)) return; @@ -1946,13 +1956,20 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, 0, enctype); - if (!frag_pn_check) { - /* Discard the fragment with invalid PN */ + if (frag) + multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar, + msdu, + 0); + + if (!frag_pn_check || !multicast_check) { + /* Discard the fragment with invalid PN or multicast DA + */ temp = msdu->prev; __skb_unlink(msdu, amsdu); dev_kfree_skb_any(msdu); msdu = temp; frag_pn_check = true; + multicast_check = true; continue; }

3 years, 9 months

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FAILED: patch "[PATCH] ath10k: add CCMP PN replay protection for fragmented frames" failed to apply to 4.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From a1166b2653db2f3de7338b9fb8a0f6e924b904ee Mon Sep 17 00:00:00 2001 From: Wen Gong <wgong(a)codeaurora.org> Date: Tue, 11 May 2021 20:02:52 +0200 Subject: [PATCH] ath10k: add CCMP PN replay protection for fragmented frames for PCIe PN replay check for not fragmented frames is finished in the firmware, but this was not done for fragmented frames when ath10k is used with QCA6174/QCA6377 PCIe. mac80211 has the function ieee80211_rx_h_defragment() for PN replay check for fragmented frames, but this does not get checked with QCA6174 due to the ieee80211_has_protected() condition not matching the cleared Protected bit case. Validate the PN of received fragmented frames within ath10k when CCMP is used and drop the fragment if the PN is not correct (incremented by exactly one from the previous fragment). This applies only for QCA6174/QCA6377 PCIe. Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00110-QCARMSWP-1 Cc: stable(a)vger.kernel.org Signed-off-by: Wen Gong <wgong(a)codeaurora.org> Signed-off-by: Jouni Malinen <jouni(a)codeaurora.org> Link: https://lore.kernel.org/r/20210511200110.9ba2664866a4.I756e47b67e210dba6996… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index 956157946106..dbc8aef82a65 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -845,6 +845,7 @@ enum htt_security_types { #define ATH10K_HTT_TXRX_PEER_SECURITY_MAX 2 #define ATH10K_TXRX_NUM_EXT_TIDS 19 +#define ATH10K_TXRX_NON_QOS_TID 16 enum htt_security_flags { #define HTT_SECURITY_TYPE_MASK 0x7F diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 1a08156d5011..f1e5bce8b14f 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1746,16 +1746,87 @@ static void ath10k_htt_rx_h_csum_offload(struct sk_buff *msdu) msdu->ip_summed = ath10k_htt_rx_get_csum_state(msdu); } +static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb, + u16 offset, + enum htt_rx_mpdu_encrypt_type enctype) +{ + struct ieee80211_hdr *hdr; + u64 pn = 0; + u8 *ehdr; + + hdr = (struct ieee80211_hdr *)(skb->data + offset); + ehdr = skb->data + offset + ieee80211_hdrlen(hdr->frame_control); + + if (enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) { + pn = ehdr[0]; + pn |= (u64)ehdr[1] << 8; + pn |= (u64)ehdr[4] << 16; + pn |= (u64)ehdr[5] << 24; + pn |= (u64)ehdr[6] << 32; + pn |= (u64)ehdr[7] << 40; + } + return pn; +} + +static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar, + struct sk_buff *skb, + u16 peer_id, + u16 offset, + enum htt_rx_mpdu_encrypt_type enctype) +{ + struct ath10k_peer *peer; + union htt_rx_pn_t *last_pn, new_pn = {0}; + struct ieee80211_hdr *hdr; + bool more_frags; + u8 tid, frag_number; + u32 seq; + + peer = ath10k_peer_find_by_id(ar, peer_id); + if (!peer) { + ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n"); + return false; + } + + hdr = (struct ieee80211_hdr *)(skb->data + offset); + if (ieee80211_is_data_qos(hdr->frame_control)) + tid = ieee80211_get_tid(hdr); + else + tid = ATH10K_TXRX_NON_QOS_TID; + + last_pn = &peer->frag_tids_last_pn[tid]; + new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, offset, enctype); + more_frags = ieee80211_has_morefrags(hdr->frame_control); + frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; + seq = (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; + + if (frag_number == 0) { + last_pn->pn48 = new_pn.pn48; + peer->frag_tids_seq[tid] = seq; + } else { + if (seq != peer->frag_tids_seq[tid]) + return false; + + if (new_pn.pn48 != last_pn->pn48 + 1) + return false; + + last_pn->pn48 = new_pn.pn48; + } + + return true; +} + static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, struct sk_buff_head *amsdu, struct ieee80211_rx_status *status, bool fill_crypt_header, u8 *rx_hdr, - enum ath10k_pkt_rx_err *err) + enum ath10k_pkt_rx_err *err, + u16 peer_id, + bool frag) { struct sk_buff *first; struct sk_buff *last; - struct sk_buff *msdu; + struct sk_buff *msdu, *temp; struct htt_rx_desc *rxd; struct ieee80211_hdr *hdr; enum htt_rx_mpdu_encrypt_type enctype; @@ -1768,6 +1839,7 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, bool is_decrypted; bool is_mgmt; u32 attention; + bool frag_pn_check = true; if (skb_queue_empty(amsdu)) return; @@ -1866,6 +1938,24 @@ static void ath10k_htt_rx_h_mpdu(struct ath10k *ar, } skb_queue_walk(amsdu, msdu) { + if (frag && !fill_crypt_header && is_decrypted && + enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) + frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar, + msdu, + peer_id, + 0, + enctype); + + if (!frag_pn_check) { + /* Discard the fragment with invalid PN */ + temp = msdu->prev; + __skb_unlink(msdu, amsdu); + dev_kfree_skb_any(msdu); + msdu = temp; + frag_pn_check = true; + continue; + } + ath10k_htt_rx_h_csum_offload(msdu); ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype, is_decrypted); @@ -2071,7 +2161,8 @@ static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt) ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt); ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter); - ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err); + ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0, + false); msdus_to_queue = skb_queue_len(&amsdu); ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status); @@ -3027,7 +3118,7 @@ static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb) ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id); ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL); ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL, - NULL); + NULL, peer_id, frag); ath10k_htt_rx_h_enqueue(ar, &amsdu, status); break; case -EAGAIN:

3 years, 9 months

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Linux-stable-mirror May 2021