https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195868
Bug ID: 195868
Summary: Integer overflow in kern/subr_clock.c :
clock_ct_to_ts() [patch]
Product: Base System
Version: 10.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 150452
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=150452&action=edit
Patch for integer overflow
How to repeat: set RTC 99 year by BIOS
Result: Error message "Invalid time in real time clock" in system log
Expected: system time must be set to 2099
Integer overflow for case sizeof(time_t) > 4 at operator:
kern/subr_clock.c:
clock_ct_to_ts(struct clocktime *ct, struct timespec *ts)
{
time_t secs;
int i, year, days;
....
secs = ((days * 24 + ct->hour) * 60 + ct->min) * 60 + ct->sec;
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