3.2.92-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit 564277eceeca01e02b1ef3e141cfb939184601b4 upstream.
January is month 1. There is no zero-th month. If someone passes a
zero month then it means we read from one space before the start of the
total_days_of_prev_months[] array.
We may as well also be strict about days as well.
Fixes: 1bd5bbcb6531 ("[CIFS] Legacy time handling for Win9x and OS/2 part 1")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Steve French <smfrench@xxxxxxxxx>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
fs/cifs/netmisc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -974,10 +974,10 @@ struct timespec cnvrtDosUnixTm(__le16 le
cERROR(1, "illegal hours %d", st->Hours);
days = sd->Day;
month = sd->Month;
- if ((days > 31) || (month > 12)) {
+ if (days < 1 || days > 31 || month < 1 || month > 12) {
cERROR(1, "illegal date, month %d day: %d", month, days);
- if (month > 12)
- month = 12;
+ days = clamp(days, 1, 31);
+ month = clamp(month, 1, 12);
}
month -= 1;
days += total_days_of_prev_months[month];