diff options
Diffstat (limited to 'drivers/acpi/acpica/tbfind.c')
| -rw-r--r-- | drivers/acpi/acpica/tbfind.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/tbfind.c b/drivers/acpi/acpica/tbfind.c index 119c84ad9833..405529d49a1a 100644 --- a/drivers/acpi/acpica/tbfind.c +++ b/drivers/acpi/acpica/tbfind.c @@ -68,12 +68,25 @@ acpi_status acpi_tb_find_table(char *signature, char *oem_id, char *oem_table_id, u32 *table_index) { - u32 i; acpi_status status; struct acpi_table_header header; + u32 i; ACPI_FUNCTION_TRACE(tb_find_table); + /* Validate the input table signature */ + + if (!acpi_is_valid_signature(signature)) { + return_ACPI_STATUS(AE_BAD_SIGNATURE); + } + + /* Don't allow the OEM strings to be too long */ + + if ((strlen(oem_id) > ACPI_OEM_ID_SIZE) || + (strlen(oem_table_id) > ACPI_OEM_TABLE_ID_SIZE)) { + return_ACPI_STATUS(AE_AML_STRING_LIMIT); + } + /* Normalize the input strings */ memset(&header, 0, sizeof(struct acpi_table_header)); |