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CVE-2023-53073

Estado: AnalizadaMedia (5.5)—

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

perf/x86/amd/core: Always clear status for idx

The variable 'status' (which contains the unhandled overflow bits) is not being properly masked in some cases, displaying the following warning:

This seems to be happening because the loop is being continued before the status bit being unset, in case x86_perf_event_set_period() returns 0. This is also causing an inconsistency because the "handled" counter is incremented, but the status bit is not cleaned.

Move the bit cleaning together above, together when the "handled" counter is incremented.

Detalles técnicos trazas, registros y código del informe original
  WARNING: CPU: 156 PID: 475601 at arch/x86/events/amd/core.c:972 amd_pmu_v2_handle_irq+0x216/0x270

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)

Mostrar
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/amd/core: Always clear status for idx\n\nThe variable 'status' (which contains the unhandled overflow bits) is\nnot being properly masked in some cases, displaying the following\nwarning:\n\n  WARNING: CPU: 156 PID: 475601 at arch/x86/events/amd/core.c:972 amd_pmu_v2_handle_irq+0x216/0x270\n\nThis seems to be happening because the loop is being continued before\nthe status bit being unset, in case x86_perf_event_set_period()\nreturns 0. This is also causing an inconsistency because the \"handled\"\ncounter is incremented, but the status bit is not cleaned.\n\nMove the bit cleaning together above, together when the \"handled\"\ncounter is incremented."
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/x86/amd/core: Siempre borrar el estado de idx. La variable 'status' (que contiene los bits de desbordamiento no controlados) no se enmascara correctamente en algunos casos, mostrando la siguiente advertencia: ADVERTENCIA: CPU: 156 PID: 475601 en arch/x86/events/amd/core.c:972 amd_pmu_v2_handle_irq+0x216/0x270. Esto parece estar sucediendo porque el bucle continúa antes de que se desactive el bit de estado, en caso de que x86_perf_event_set_period() devuelva 0. Esto también causa una inconsistencia porque el contador \"controlado\" se incrementa, pero el bit de estado no se limpia. Mueva la limpieza de bits junto arriba, junto cuando se incrementa el contador \"controlado\"."
    }
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  "lastModified": "2026-06-17T06:44:14.630",
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