mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
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46 lines
1.6 KiB
Diff
46 lines
1.6 KiB
Diff
From f35ce58f516c15c022745d687bb1c59ffab63293 Mon Sep 17 00:00:00 2001
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From: Insun Song <insun.song@broadcom.com>
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Date: Wed, 24 May 2017 10:11:27 -0700
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Subject: net: wireless: bcmdhd: add boundary check in dhd_rtt_event_handler
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added boundary check for input parameters not to corrupt kernel heap in
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case user injected malformed input
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Signed-off-by: Insun Song <insun.song@broadcom.com>
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Bug: 37305578
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Change-Id: I92114d7166fb68d8d97b33ea214f80e8917794d1
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---
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drivers/net/wireless/bcmdhd/dhd_rtt.c | 9 +++++++++
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1 file changed, 9 insertions(+)
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diff --git a/drivers/net/wireless/bcmdhd/dhd_rtt.c b/drivers/net/wireless/bcmdhd/dhd_rtt.c
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index 371328a..34b05be 100644
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--- a/drivers/net/wireless/bcmdhd/dhd_rtt.c
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+++ b/drivers/net/wireless/bcmdhd/dhd_rtt.c
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@@ -1696,6 +1696,10 @@ dhd_rtt_event_handler(dhd_pub_t *dhd, wl_event_msg_t *event, void *event_data)
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return ret;
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}
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}
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+ if (!event_data) {
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+ DHD_ERROR(("%s: event_data:NULL\n", __FUNCTION__));
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+ return -EINVAL;
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+ }
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p_event = (wl_proxd_event_t *) event_data;
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version = ltoh16(p_event->version);
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if (version < WL_PROXD_API_VERSION) {
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@@ -1718,6 +1722,11 @@ dhd_rtt_event_handler(dhd_pub_t *dhd, wl_event_msg_t *event, void *event_data)
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goto exit; /* ignore this event */
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}
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/* get TLVs len, skip over event header */
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+ if (ltoh16(p_event->len) < OFFSETOF(wl_proxd_event_t, tlvs)) {
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+ DHD_ERROR(("invalid FTM event length:%d\n", ltoh16(p_event->len)));
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+ ret = -EINVAL;
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+ goto exit;
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+ }
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tlvs_len = ltoh16(p_event->len) - OFFSETOF(wl_proxd_event_t, tlvs);
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DHD_RTT(("receive '%s' event: version=0x%x len=%d method=%d sid=%d tlvs_len=%d\n",
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p_loginfo->text,
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--
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cgit v1.1
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