CVE-2025-37849

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

09/05/2025

Last modified:

17/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create() fails to share the vCPU page with the hypervisor, we propagate the error back to the ioctl but leave the vGIC vCPU data initialised. Note only does this leak the corresponding memory when the vCPU is destroyed but it can also lead to use-after-free if the redistributor device handling tries to walk into the vCPU. Add the missing cleanup to kvm_arch_vcpu_create(), ensuring that the vGIC vCPU structures are destroyed on error.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		6.1.135 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.88 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.24 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.13.12 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.14 (including)	6.14.3 (excluding)
cpe:2.3:o:debian:debian_linux:11.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-37849

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools