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ble_mesh: stack: Bugfix for oversized SegN as valid

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This commit is contained in:
wangjialiang 2022-03-24 17:20:16 +08:00
parent 588436db47
commit c4f39a5d91
2 changed files with 14 additions and 0 deletions
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7
components/bt/esp_ble_mesh/mesh_core/prov.c
View File

@ -74,6 +74,7 @@
#define START_PAYLOAD_MAX 20
#define CONT_PAYLOAD_MAX 23
#define START_LAST_SEG_MAX 2
#define START_LAST_SEG(gpc) (gpc >> 2)
#define CONT_SEG_INDEX(gpc) (gpc >> 2)
@ -1563,6 +1564,12 @@ static void gen_prov_start(struct prov_rx *rx, struct net_buf_simple *buf)
return;
}
if (START_LAST_SEG(rx->gpc) > START_LAST_SEG_MAX) {
BT_ERR("Invalid SegN 0x%02x", START_LAST_SEG(rx->gpc));
prov_send_fail_msg(PROV_ERR_UNEXP_ERR);
return;
}
if (link.rx.buf->len > link.rx.buf->size) {
BT_ERR("Too large provisioning PDU (%u bytes)",
link.rx.buf->len);

7
components/bt/esp_ble_mesh/mesh_core/provisioner_prov.c
View File

@ -82,6 +82,7 @@ _Static_assert(BLE_MESH_MAX_CONN >= CONFIG_BLE_MESH_PBG_SAME_TIME,
#define START_PAYLOAD_MAX 20
#define CONT_PAYLOAD_MAX 23
#define START_LAST_SEG_MAX 2
#define START_LAST_SEG(gpc) (gpc >> 2)
#define CONT_SEG_INDEX(gpc) (gpc >> 2)
@ -2988,6 +2989,12 @@ static void gen_prov_start(const uint8_t idx, struct prov_rx *rx, struct net_buf
return;
}
if (START_LAST_SEG(rx->gpc) > START_LAST_SEG_MAX) {
BT_ERR("Invalid SegN 0x%02x", START_LAST_SEG(rx->gpc));
close_link(idx, CLOSE_REASON_FAILED);
return;
}
if (link[idx].rx.buf->len > link[idx].rx.buf->size) {
BT_ERR("Too large provisioning PDU (%u bytes)",
link[idx].rx.buf->len);