Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: platform/chrome: sensorhub: Fix memory overread in ring handler `max_response` and `sensor_num` are read from different EC commands: - `max_response` is from cros_ec_get_proto_info(). ec_dev->max_response = info->max_response_packet_size - sizeof(struct ec_host_response); - `sensor_num` is from cros_ec_get_sensor_count(). sensor_num = cros_ec_get_sensor_count(ec); With a malfunctioning EC firmware, it is possible that the `msg->insize` (i.e., `fifo_info_length` in the context) could be clamped in cros_ec_cmd_xfer() because `msg->insize` is greater than `max_response`. int fifo_info_length = sizeof(struct ec_response_motion_sense_fifo_info) + sizeof(u16) * sensorhub->sensor_num; This means the number of read bytes could be less than expected. As a result, the subsequent memcpy() in cros_ec_sensorhub_ring_handler() overreads the `resp->fifo_info` buffer. Check the return value of cros_ec_cmd_xfer_status() and abort if the number of bytes read does not match the expected length.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 145d59baff5944b71551ac518d7fd7d377a9c820 before 98604cc8fd2578442f49cd113481e8fc83bc0ad3; affected 145d59baff5944b71551ac518d7fd7d377a9c820 before 86bcfab7dff6f0a61cbe0660e5176e907353141b; affected 145d59baff5944b71551ac518d7fd7d377a9c820 before 7e901aaf95828364b05a2120a1bea1a1669bdc9a; affected 145d59baff5944b71551ac518d7fd7d377a9c820 before 7780d93ae28f31fe517417c9451255315d1ad584; affected 145d59baff5944b71551ac518d7fd7d377a9c820 before ee0403520cdbcf87e853df9aaa9b518a0684ed38; affected 145d59baff5944b71551ac518d7fd7d377a9c820 before 847a5ba0ac75f609e3f88da905251f7a76179145; affected 145d59baff5944b71551ac518d7fd7d377a9c820 before 6268f46d83875d294d75b68b97a5b79953744598; affected 145d59baff5944b71551ac518d7fd7d377a9c820 before d1ceb2b2324717fa30b44d56ef0c52813e239569 |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/98604cc8fd2578442f49cd113481e8fc83bc0ad3
- https://git.kernel.org/stable/c/86bcfab7dff6f0a61cbe0660e5176e907353141b
- https://git.kernel.org/stable/c/7e901aaf95828364b05a2120a1bea1a1669bdc9a
- https://git.kernel.org/stable/c/7780d93ae28f31fe517417c9451255315d1ad584
- https://git.kernel.org/stable/c/ee0403520cdbcf87e853df9aaa9b518a0684ed38
- https://git.kernel.org/stable/c/847a5ba0ac75f609e3f88da905251f7a76179145
- https://git.kernel.org/stable/c/6268f46d83875d294d75b68b97a5b79953744598
- https://git.kernel.org/stable/c/d1ceb2b2324717fa30b44d56ef0c52813e239569