diff options
Diffstat (limited to 'drivers/firmware/efi')
| -rw-r--r-- | drivers/firmware/efi/cper.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c index 6a966ecdd80a..8fa977c7861f 100644 --- a/drivers/firmware/efi/cper.c +++ b/drivers/firmware/efi/cper.c @@ -534,19 +534,24 @@ EXPORT_SYMBOL_GPL(cper_estatus_check_header); int cper_estatus_check(const struct acpi_hest_generic_status *estatus) { struct acpi_hest_generic_data *gdata; - unsigned int data_len, gedata_len; + unsigned int data_len, record_size; int rc; rc = cper_estatus_check_header(estatus); if (rc) return rc; + data_len = estatus->data_length; apei_estatus_for_each_section(estatus, gdata) { - gedata_len = acpi_hest_get_error_length(gdata); - if (gedata_len > data_len - acpi_hest_get_size(gdata)) + if (sizeof(struct acpi_hest_generic_data) > data_len) + return -EINVAL; + + record_size = acpi_hest_get_record_size(gdata); + if (record_size > data_len) return -EINVAL; - data_len -= acpi_hest_get_record_size(gdata); + + data_len -= record_size; } if (data_len) return -EINVAL; |