Merge "msm: camera: sensor: TOCTOU error handling in eeprom" into camera-kernel.lnx.7.0

Этот коммит содержится в:
Camera Software Integration
2024-07-09 01:46:27 -07:00
коммит произвёл Gerrit - the friendly Code Review server
родитель 8fbdd92875 f6a5a3a9a7
Коммит 66499c8ec0

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@@ -425,6 +425,7 @@ static int32_t cam_eeprom_parse_memory_map(
int32_t rc = 0;
int32_t cnt = 0;
int32_t processed_size = 0;
int32_t payload_count;
uint8_t generic_op_code;
struct cam_eeprom_memory_map_t *map = data->map;
struct common_header *cmm_hdr =
@@ -454,24 +455,25 @@ static int32_t cam_eeprom_parse_memory_map(
switch (cmm_hdr->cmd_type) {
case CAMERA_SENSOR_CMD_TYPE_I2C_RNDM_WR:
i2c_random_wr = (struct cam_cmd_i2c_random_wr *)cmd_buf;
payload_count = i2c_random_wr->header.count;
if (i2c_random_wr->header.count == 0 ||
i2c_random_wr->header.count >= MSM_EEPROM_MAX_MEM_MAP_CNT ||
if (payload_count == 0 ||
payload_count >= MSM_EEPROM_MAX_MEM_MAP_CNT ||
(size_t)*num_map >= ((MSM_EEPROM_MAX_MEM_MAP_CNT *
MSM_EEPROM_MEMORY_MAP_MAX_SIZE) -
i2c_random_wr->header.count)) {
payload_count)) {
CAM_ERR(CAM_EEPROM, "OOB Error");
return -EINVAL;
}
cmd_length_in_bytes = sizeof(struct cam_cmd_i2c_random_wr) +
((i2c_random_wr->header.count - 1) *
((payload_count - 1) *
sizeof(struct i2c_random_wr_payload));
if (cmd_length_in_bytes > remain_buf_len) {
CAM_ERR(CAM_EEPROM, "Not enough buffer remaining");
return -EINVAL;
}
for (cnt = 0; cnt < (i2c_random_wr->header.count);
for (cnt = 0; cnt < (payload_count);
cnt++) {
map[*num_map + cnt].page.addr =
i2c_random_wr->random_wr_payload[cnt].reg_addr;
@@ -484,15 +486,16 @@ static int32_t cam_eeprom_parse_memory_map(
map[*num_map + cnt].page.valid_size = 1;
}
*num_map += (i2c_random_wr->header.count - 1);
*num_map += (payload_count - 1);
processed_size +=
cmd_length_in_bytes;
break;
case CAMERA_SENSOR_CMD_TYPE_I2C_CONT_RD:
i2c_cont_rd = (struct cam_cmd_i2c_continuous_rd *)cmd_buf;
cmd_length_in_bytes = sizeof(struct cam_cmd_i2c_continuous_rd);
payload_count = i2c_cont_rd->header.count;
if (i2c_cont_rd->header.count >= U32_MAX - data->num_data) {
if (payload_count >= U32_MAX - data->num_data) {
CAM_ERR(CAM_EEPROM,
"int overflow on eeprom memory block");
return -EINVAL;
@@ -501,7 +504,7 @@ static int32_t cam_eeprom_parse_memory_map(
map[*num_map].mem.addr_type = i2c_cont_rd->header.addr_type;
map[*num_map].mem.data_type = i2c_cont_rd->header.data_type;
map[*num_map].mem.valid_size =
i2c_cont_rd->header.count;
payload_count;
processed_size +=
cmd_length_in_bytes;
data->num_data += map[*num_map].mem.valid_size;