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CVE-2022-49748

Estado: ModificadaMedia (5.5)—

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

perf/x86/amd: fix potential integer overflow on shift of a int

The left shift of int 32 bit integer constant 1 is evaluated using 32 bit arithmetic and then passed as a 64 bit function argument. In the case where i is 32 or more this can lead to an overflow. Avoid this by shifting using the BIT_ULL macro instead.

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": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/x86/amd: se corrige un posible desbordamiento de enteros al desplazar un entero. El desplazamiento a la izquierda de la constante entera de 32 bits 1 se evalúa mediante aritmética de 32 bits y se pasa como argumento de función de 64 bits. Si i es 32 o más, esto puede provocar un desbordamiento. Para evitarlo, utilice la macro BIT_ULL para desplazar."
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