CVE-2025-38469

medium

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvm_xen_schedop_poll does a kmalloc_array() when a VM polls the host for more than one event channel potr (nr_ports > 1). After the kmalloc_array(), the error paths need to go through the "out" label, but the call to kvm_read_guest_virt() does not. [Adjusted commit message. - Paolo]

References

https://git.kernel.org/stable/c/fd627ac8a5cff4d45269f164b13ddddc0726f2cc

https://git.kernel.org/stable/c/5a53249d149f48b558368c5338b9921b76a12f8c

https://git.kernel.org/stable/c/3ee59c38ae7369ad1f7b846e05633ccf0d159fab

https://git.kernel.org/stable/c/061c553c66bc1638c280739999224c8000fd4602

Details

Source: Mitre, NVD

Published: 2025-07-28

Updated: 2025-07-29

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00018