CVE-2024-57953

Summary

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 "tmp" 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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux9f67c1e63976d3403f0b250b03ffe959c890f9db < 5127f3cbfc78a7b301b86328247230bec47e0bb3affected
LinuxLinux9f67c1e63976d3403f0b250b03ffe959c890f9db < 53b0c7b15accb18d15d95c7fe68f61630ebfd1caaffected
LinuxLinux9f67c1e63976d3403f0b250b03ffe959c890f9db < 09c4a610153286cef54d4f0c85398f4e32fc227eaffected
LinuxLinux6.8affected
LinuxLinux0 < 6.8unaffected
LinuxLinux6.12.13 <= 6.12.*unaffected
LinuxLinux6.13.2 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References