CVE-2024-57953 (GCVE-0-2024-57953)
Vulnerability from cvelistv5
Published
2025-02-27 02:07
Modified
2025-05-04 10:07
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 9f67c1e63976d3403f0b250b03ffe959c890f9db
Version: 9f67c1e63976d3403f0b250b03ffe959c890f9db
Version: 9f67c1e63976d3403f0b250b03ffe959c890f9db
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          "product": "Linux",
          "programFiles": [
            "drivers/rtc/rtc-tps6594.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: tps6594: Fix integer overflow on 32bit systems\n\nThe problem is this multiply in tps6594_rtc_set_offset()\n\n\ttmp = offset * TICKS_PER_HOUR;\n\nThe \"tmp\" variable is an s64 but \"offset\" is a long in the\n(-277774)-277774 range.  On 32bit systems a long can hold numbers up to\napproximately two billion.  The number of TICKS_PER_HOUR is really large,\n(32768 * 3600) or roughly a hundred million.  When you start multiplying\nby a hundred million it doesn\u0027t take long to overflow the two billion\nmark.\n\nProbably the safest way to fix this is to change the type of\nTICKS_PER_HOUR to long long because it\u0027s such a large number."
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        "dateUpdated": "2025-05-04T10:07:26.337Z",
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    "datePublished": "2025-02-27T02:07:01.598Z",
    "dateReserved": "2025-01-19T11:50:08.381Z",
    "dateUpdated": "2025-05-04T10:07:26.337Z",
    "state": "PUBLISHED"
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  }
}


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