The user provides arbitrary non-numeic value to level and type,
which could bring expected behavior. In this case the expected
behavior would be to throw an error.
pfrut -h
usage: pfrut [OPTIONS]
code injection:
-l, --load
-s, --stage
-a, --activate
-u, --update [stage and activate]
-q, --query
-d, --revid
update telemetry:
-G, --getloginfo
-T, --type(0:execution, 1:history)
-L, --level(0, 1, 2, 4)
-R, --read
-D, --revid log
pfrut -T A
pfrut -G
log_level:0
log_type:0
log_revid:2
max_data_size:65536
chunk1_size:0
chunk2_size:1530
rollover_cnt:0
reset_cnt:17
Fix this by restricting the input to be in the expected range.
Reported-by: Hariganesh Govindarajulu <hariganesh.govindarajulu@xxxxxxxxx>
Suggested-by: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Chen Yu <yu.c.chen@xxxxxxxxx>
---
v2: Replace atoi() with strtol() to filter the number. (Rafael)
---
tools/power/acpi/tools/pfrut/pfrut.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/tools/power/acpi/tools/pfrut/pfrut.c b/tools/power/acpi/tools/pfrut/pfrut.c
index 52aa0351533c..388c9e3ad040 100644
--- a/tools/power/acpi/tools/pfrut/pfrut.c
+++ b/tools/power/acpi/tools/pfrut/pfrut.c
@@ -97,7 +97,7 @@ static struct option long_options[] = {
static void parse_options(int argc, char **argv)
{
int option_index = 0;
- char *pathname;
+ char *pathname, *endptr;
int opt;
pathname = strdup(argv[0]);
@@ -125,11 +125,23 @@ static void parse_options(int argc, char **argv)
log_getinfo = 1;
break;
case 'T':
- log_type = atoi(optarg);
+ log_type = strtol(optarg, &endptr, 0);
+ if (*endptr || (log_type != 0 && log_type != 1)) {
+ printf("Number expected: type(0:execution, 1:history) - Quit.\n");
+ exit(1);
+ }
+
set_log_type = 1;
break;
case 'L':
- log_level = atoi(optarg);
+ log_level = strtol(optarg, &endptr, 0);
+ if (*endptr ||
+ (log_level != 0 && log_level != 1 &&
+ log_level != 2 && log_level != 4)) {
+ printf("Number expected: level(0, 1, 2, 4) - Quit.\n");
+ exit(1);
+ }
+
set_log_level = 1;
break;
case 'R':
--
2.25.1
