diff options
| author | Kay Sievers <kay@vrfy.org> | 2013-10-10 01:38:11 +0200 |
|---|---|---|
| committer | Kay Sievers <kay@vrfy.org> | 2013-10-10 01:38:11 +0200 |
| commit | 6c7980093c4e39d07bf06484f96f489e236c7c29 (patch) | |
| tree | 4b5cfc5ec451582ec136cb09834b61dad7f47c67 | |
| parent | 8552b17660033812080a11533bd0edce74401039 (diff) | |
do not accept "garbage" from acpi firmware performance data (FPDT)
00000000 46 42 50 54 38 00 00 00 02 00 30 02 00 00 00 00 |FBPT8.....0.....|
00000010 23 45 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |#E..............|
00000020 f5 6a 51 00 00 00 00 00 00 00 00 00 00 00 00 00 |.jQ.............|
00000030 00 00 00 00 00 00 00 00 70 74 61 6c 58 00 00 00 |........ptalX...|
| -rw-r--r-- | src/shared/acpi-fpdt.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/shared/acpi-fpdt.c b/src/shared/acpi-fpdt.c index af58c7cca6..75648b4d86 100644 --- a/src/shared/acpi-fpdt.c +++ b/src/shared/acpi-fpdt.c @@ -146,6 +146,11 @@ int acpi_get_boot_usec(usec_t *loader_start, usec_t *loader_exit) { if (brec.type != ACPI_FPDT_BOOT_REC) return -EINVAL; + if (brec.startup_start == 0 || brec.exit_services_exit < brec.startup_start) + return -EINVAL; + if (brec.exit_services_exit > NSEC_PER_HOUR) + return -EINVAL; + if (loader_start) *loader_start = brec.startup_start / 1000; if (loader_exit) |