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-rw-r--r--crypto/asymmetric_keys/x509_cert_parser.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
index 3000ea3b6687..021d39c0ba75 100644
--- a/crypto/asymmetric_keys/x509_cert_parser.c
+++ b/crypto/asymmetric_keys/x509_cert_parser.c
@@ -531,7 +531,11 @@ int x509_decode_time(time64_t *_t, size_t hdrlen,
if (*p != 'Z')
goto unsupported_time;
- mon_len = month_lengths[mon];
+ if (year < 1970 ||
+ mon < 1 || mon > 12)
+ goto invalid_time;
+
+ mon_len = month_lengths[mon - 1];
if (mon == 2) {
if (year % 4 == 0) {
mon_len = 29;
@@ -543,14 +547,12 @@ int x509_decode_time(time64_t *_t, size_t hdrlen,
}
}
- if (year < 1970 ||
- mon < 1 || mon > 12 ||
- day < 1 || day > mon_len ||
+ if (day < 1 || day > mon_len ||
hour > 23 ||
min > 59 ||
sec > 59)
goto invalid_time;
-
+
*_t = mktime64(year, mon, day, hour, min, sec);
return 0;
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