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CVE-2024-56739

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

rtc: check if __rtc_read_time was successful in rtc_timer_do_work()

If the __rtc_read_time call fails,, the struct rtc_time tm; may contain uninitialized data, or an illegal date/time read from the RTC hardware.

When calling rtc_tm_to_ktime later, the result may be a very large value (possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue, they will continually expire, may causing kernel softlockup.

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)

CWE

Referencias

JSON original (NVD)

Mostrar
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: check if __rtc_read_time was successful in rtc_timer_do_work()\n\nIf the __rtc_read_time call fails,, the struct rtc_time tm; may contain\nuninitialized data, or an illegal date/time read from the RTC hardware.\n\nWhen calling rtc_tm_to_ktime later, the result may be a very large value\n(possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue,\nthey will continually expire, may causing kernel softlockup."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rtc: comprobar si __rtc_read_time se ha ejecutado correctamente en rtc_timer_do_work() Si la llamada a __rtc_read_time falla, la estructura rtc_time tm; puede contener datos no inicializados o una fecha/hora ilegal leída desde el hardware RTC. Al llamar a rtc_tm_to_ktime más tarde, el resultado puede ser un valor muy grande (posiblemente KTIME_MAX). Si hay temporizadores periódicos en rtc->timerqueue, expirarán continuamente, lo que puede provocar un bloqueo suave del kernel."
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