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]
History

Tue, 29 Jul 2025 12:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Tue, 29 Jul 2025 08:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Mon, 28 Jul 2025 11:30:00 +0000

Type Values Removed Values Added
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]
Title KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-07-28T11:21:30.992Z

Updated: 2025-07-28T11:21:30.992Z

Reserved: 2025-04-16T04:51:24.020Z

Link: CVE-2025-38469

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-07-28T12:15:28.640

Modified: 2025-07-29T14:14:29.590

Link: CVE-2025-38469

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-07-28T00:00:00Z

Links: CVE-2025-38469 - Bugzilla