CVE-2025-38469 Information

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]

Reference

https://git.kernel.org/stable/c/061c553c66bc1638c280739999224c8000fd4602 https://git.kernel.org/stable/c/3ee59c38ae7369ad1f7b846e05633ccf0d159fab https://git.kernel.org/stable/c/5a53249d149f48b558368c5338b9921b76a12f8c https://git.kernel.org/stable/c/fd627ac8a5cff4d45269f164b13ddddc0726f2cc

Related CNNVD

CNNVD-202507-3467 (Published: 2025-07-28)