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CVE-2024-57953

Estado: ModificadaMedia (5.5)—

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()

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.

Detalles técnicos trazas, registros y código del informe original
	tmp = offset * TICKS_PER_HOUR;

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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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't 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's such a large number."
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