CVE-2025-21818

CVE-2025-21818

Título es
CVE-2025-21818

Jue, 27/02/2025 – 20:16

Gravedad 2.0 Txt
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Título en

CVE-2025-21818

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

x86/xen: fix xen_hypercall_hvm() to not clobber %rbx

xen_hypercall_hvm(), which is used when running as a Xen PVH guest at
most only once during early boot, is clobbering %rbx. Depending on
whether the caller relies on %rbx to be preserved across the call or
not, this clobbering might result in an early crash of the system.

This can be avoided by using an already saved register instead of %rbx.

27/02/2025

27/02/2025

Gravedad 3.1 Txt Gravedad 3.1 (CVSS 3.1 Base Score)
Pendiente de análisis

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