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-rw-r--r--package/kernel/mac80211/patches/344-0005-brcmfmac-Add-length-checks-on-firmware-events.patch283
1 files changed, 0 insertions, 283 deletions
diff --git a/package/kernel/mac80211/patches/344-0005-brcmfmac-Add-length-checks-on-firmware-events.patch b/package/kernel/mac80211/patches/344-0005-brcmfmac-Add-length-checks-on-firmware-events.patch
deleted file mode 100644
index 3e2e3503b6..0000000000
--- a/package/kernel/mac80211/patches/344-0005-brcmfmac-Add-length-checks-on-firmware-events.patch
+++ /dev/null
@@ -1,283 +0,0 @@
-From: Hante Meuleman <meuleman@broadcom.com>
-Date: Wed, 17 Feb 2016 11:26:54 +0100
-Subject: [PATCH] brcmfmac: Add length checks on firmware events
-
-Add additional length checks on firmware events to create more
-robust code.
-
-Reviewed-by: Arend Van Spriel <arend@broadcom.com>
-Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
-Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
-Reviewed-by: Lei Zhang <leizh@broadcom.com>
-Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
-Signed-off-by: Arend van Spriel <arend@broadcom.com>
-Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
----
-
---- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
-+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
-@@ -3092,6 +3092,11 @@ brcmf_notify_sched_scan_results(struct b
-
- brcmf_dbg(SCAN, "Enter\n");
-
-+ if (e->datalen < (sizeof(*pfn_result) + sizeof(*netinfo))) {
-+ brcmf_dbg(SCAN, "Event data to small. Ignore\n");
-+ return 0;
-+ }
-+
- if (e->event_code == BRCMF_E_PFN_NET_LOST) {
- brcmf_dbg(SCAN, "PFN NET LOST event. Do Nothing\n");
- return 0;
-@@ -3415,6 +3420,11 @@ brcmf_wowl_nd_results(struct brcmf_if *i
-
- brcmf_dbg(SCAN, "Enter\n");
-
-+ if (e->datalen < (sizeof(*pfn_result) + sizeof(*netinfo))) {
-+ brcmf_dbg(SCAN, "Event data to small. Ignore\n");
-+ return 0;
-+ }
-+
- pfn_result = (struct brcmf_pno_scanresults_le *)data;
-
- if (e->event_code == BRCMF_E_PFN_NET_LOST) {
---- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
-+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c
-@@ -26,50 +26,6 @@
- #include "fwil.h"
-
- /**
-- * struct brcm_ethhdr - broadcom specific ether header.
-- *
-- * @subtype: subtype for this packet.
-- * @length: TODO: length of appended data.
-- * @version: version indication.
-- * @oui: OUI of this packet.
-- * @usr_subtype: subtype for this OUI.
-- */
--struct brcm_ethhdr {
-- __be16 subtype;
-- __be16 length;
-- u8 version;
-- u8 oui[3];
-- __be16 usr_subtype;
--} __packed;
--
--struct brcmf_event_msg_be {
-- __be16 version;
-- __be16 flags;
-- __be32 event_type;
-- __be32 status;
-- __be32 reason;
-- __be32 auth_type;
-- __be32 datalen;
-- u8 addr[ETH_ALEN];
-- char ifname[IFNAMSIZ];
-- u8 ifidx;
-- u8 bsscfgidx;
--} __packed;
--
--/**
-- * struct brcmf_event - contents of broadcom event packet.
-- *
-- * @eth: standard ether header.
-- * @hdr: broadcom specific ether header.
-- * @msg: common part of the actual event message.
-- */
--struct brcmf_event {
-- struct ethhdr eth;
-- struct brcm_ethhdr hdr;
-- struct brcmf_event_msg_be msg;
--} __packed;
--
--/**
- * struct brcmf_fweh_queue_item - event item on event queue.
- *
- * @q: list element for queuing.
-@@ -85,6 +41,7 @@ struct brcmf_fweh_queue_item {
- u8 ifidx;
- u8 ifaddr[ETH_ALEN];
- struct brcmf_event_msg_be emsg;
-+ u32 datalen;
- u8 data[0];
- };
-
-@@ -294,6 +251,11 @@ static void brcmf_fweh_event_worker(stru
- brcmf_dbg_hex_dump(BRCMF_EVENT_ON(), event->data,
- min_t(u32, emsg.datalen, 64),
- "event payload, len=%d\n", emsg.datalen);
-+ if (emsg.datalen > event->datalen) {
-+ brcmf_err("event invalid length header=%d, msg=%d\n",
-+ event->datalen, emsg.datalen);
-+ goto event_free;
-+ }
-
- /* special handling of interface event */
- if (event->code == BRCMF_E_IF) {
-@@ -439,7 +401,8 @@ int brcmf_fweh_activate_events(struct br
- * dispatch the event to a registered handler (using worker).
- */
- void brcmf_fweh_process_event(struct brcmf_pub *drvr,
-- struct brcmf_event *event_packet)
-+ struct brcmf_event *event_packet,
-+ u32 packet_len)
- {
- enum brcmf_fweh_event_code code;
- struct brcmf_fweh_info *fweh = &drvr->fweh;
-@@ -459,6 +422,9 @@ void brcmf_fweh_process_event(struct brc
- if (code != BRCMF_E_IF && !fweh->evt_handler[code])
- return;
-
-+ if (datalen > BRCMF_DCMD_MAXLEN)
-+ return;
-+
- if (in_interrupt())
- alloc_flag = GFP_ATOMIC;
-
-@@ -472,6 +438,7 @@ void brcmf_fweh_process_event(struct brc
- /* use memcpy to get aligned event message */
- memcpy(&event->emsg, &event_packet->msg, sizeof(event->emsg));
- memcpy(event->data, data, datalen);
-+ event->datalen = datalen;
- memcpy(event->ifaddr, event_packet->eth.h_dest, ETH_ALEN);
-
- brcmf_fweh_queue_event(fweh, event);
---- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.h
-+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.h
-@@ -27,7 +27,6 @@
- struct brcmf_pub;
- struct brcmf_if;
- struct brcmf_cfg80211_info;
--struct brcmf_event;
-
- /* list of firmware events */
- #define BRCMF_FWEH_EVENT_ENUM_DEFLIST \
-@@ -180,13 +179,55 @@ enum brcmf_fweh_event_code {
- /**
- * definitions for event packet validation.
- */
--#define BRCMF_EVENT_OUI_OFFSET 19
--#define BRCM_OUI "\x00\x10\x18"
--#define DOT11_OUI_LEN 3
--#define BCMILCP_BCM_SUBTYPE_EVENT 1
-+#define BRCM_OUI "\x00\x10\x18"
-+#define BCMILCP_BCM_SUBTYPE_EVENT 1
-
-
- /**
-+ * struct brcm_ethhdr - broadcom specific ether header.
-+ *
-+ * @subtype: subtype for this packet.
-+ * @length: TODO: length of appended data.
-+ * @version: version indication.
-+ * @oui: OUI of this packet.
-+ * @usr_subtype: subtype for this OUI.
-+ */
-+struct brcm_ethhdr {
-+ __be16 subtype;
-+ __be16 length;
-+ u8 version;
-+ u8 oui[3];
-+ __be16 usr_subtype;
-+} __packed;
-+
-+struct brcmf_event_msg_be {
-+ __be16 version;
-+ __be16 flags;
-+ __be32 event_type;
-+ __be32 status;
-+ __be32 reason;
-+ __be32 auth_type;
-+ __be32 datalen;
-+ u8 addr[ETH_ALEN];
-+ char ifname[IFNAMSIZ];
-+ u8 ifidx;
-+ u8 bsscfgidx;
-+} __packed;
-+
-+/**
-+ * struct brcmf_event - contents of broadcom event packet.
-+ *
-+ * @eth: standard ether header.
-+ * @hdr: broadcom specific ether header.
-+ * @msg: common part of the actual event message.
-+ */
-+struct brcmf_event {
-+ struct ethhdr eth;
-+ struct brcm_ethhdr hdr;
-+ struct brcmf_event_msg_be msg;
-+} __packed;
-+
-+/**
- * struct brcmf_event_msg - firmware event message.
- *
- * @version: version information.
-@@ -256,34 +297,35 @@ void brcmf_fweh_unregister(struct brcmf_
- enum brcmf_fweh_event_code code);
- int brcmf_fweh_activate_events(struct brcmf_if *ifp);
- void brcmf_fweh_process_event(struct brcmf_pub *drvr,
-- struct brcmf_event *event_packet);
-+ struct brcmf_event *event_packet,
-+ u32 packet_len);
- void brcmf_fweh_p2pdev_setup(struct brcmf_if *ifp, bool ongoing);
-
- static inline void brcmf_fweh_process_skb(struct brcmf_pub *drvr,
- struct sk_buff *skb)
- {
- struct brcmf_event *event_packet;
-- u8 *data;
- u16 usr_stype;
-
- /* only process events when protocol matches */
- if (skb->protocol != cpu_to_be16(ETH_P_LINK_CTL))
- return;
-
-+ if ((skb->len + ETH_HLEN) < sizeof(*event_packet))
-+ return;
-+
- /* check for BRCM oui match */
- event_packet = (struct brcmf_event *)skb_mac_header(skb);
-- data = (u8 *)event_packet;
-- data += BRCMF_EVENT_OUI_OFFSET;
-- if (memcmp(BRCM_OUI, data, DOT11_OUI_LEN))
-+ if (memcmp(BRCM_OUI, &event_packet->hdr.oui[0],
-+ sizeof(event_packet->hdr.oui)))
- return;
-
- /* final match on usr_subtype */
-- data += DOT11_OUI_LEN;
-- usr_stype = get_unaligned_be16(data);
-+ usr_stype = get_unaligned_be16(&event_packet->hdr.usr_subtype);
- if (usr_stype != BCMILCP_BCM_SUBTYPE_EVENT)
- return;
-
-- brcmf_fweh_process_event(drvr, event_packet);
-+ brcmf_fweh_process_event(drvr, event_packet, skb->len + ETH_HLEN);
- }
-
- #endif /* FWEH_H_ */
---- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
-+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
-@@ -1361,6 +1361,11 @@ int brcmf_p2p_notify_action_frame_rx(str
- u16 mgmt_type;
- u8 action;
-
-+ if (e->datalen < sizeof(*rxframe)) {
-+ brcmf_dbg(SCAN, "Event data to small. Ignore\n");
-+ return 0;
-+ }
-+
- ch.chspec = be16_to_cpu(rxframe->chanspec);
- cfg->d11inf.decchspec(&ch);
- /* Check if wpa_supplicant has registered for this frame */
-@@ -1858,6 +1863,11 @@ s32 brcmf_p2p_notify_rx_mgmt_p2p_probere
- brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code,
- e->reason);
-
-+ if (e->datalen < sizeof(*rxframe)) {
-+ brcmf_dbg(SCAN, "Event data to small. Ignore\n");
-+ return 0;
-+ }
-+
- ch.chspec = be16_to_cpu(rxframe->chanspec);
- cfg->d11inf.decchspec(&ch);
-
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