CVE-2024-57953 Information

Description

In the Linux kernel the following vulnerability has been resolved:

rtc: tps6594: Fix integer overflow on 32bit systems

The problem is this multiply in tps6594_rtc_set_offset()

tmp = offset  TICKS_PER_HOUR;

The mp\ variable is an s64 but \offset\ is a long in the (-277774)-277774 range. On 32bit systems a long can hold numbers up to approximately two billion. The number of TICKS_PER_HOUR is really large (32768 3600) or roughly a hundred million. When you start multiplying by a hundred million it doesn’t take long to overflow the two billion mark.

Probably the safest way to fix this is to change the type of TICKS_PER_HOUR to long long because it’s such a large number.

Reference

https://git.kernel.org/stable/c/09c4a610153286cef54d4f0c85398f4e32fc227e https://git.kernel.org/stable/c/5127f3cbfc78a7b301b86328247230bec47e0bb3 https://git.kernel.org/stable/c/53b0c7b15accb18d15d95c7fe68f61630ebfd1ca