diff options
Diffstat (limited to 'package/kernel/mac80211/patches/ath10k/303-ath10k-drop-MPDU-which-has-discard-flag-set-by-firmw.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/ath10k/303-ath10k-drop-MPDU-which-has-discard-flag-set-by-firmw.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath10k/303-ath10k-drop-MPDU-which-has-discard-flag-set-by-firmw.patch b/package/kernel/mac80211/patches/ath10k/303-ath10k-drop-MPDU-which-has-discard-flag-set-by-firmw.patch new file mode 100644 index 0000000000..03bce4231b --- /dev/null +++ b/package/kernel/mac80211/patches/ath10k/303-ath10k-drop-MPDU-which-has-discard-flag-set-by-firmw.patch @@ -0,0 +1,54 @@ +From: Wen Gong <wgong@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@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 +@@ -2312,6 +2312,11 @@ static bool ath10k_htt_rx_proc_rx_ind_hl + 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. +--- 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; |