CVE-2025-21978

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

01/04/2025

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: Fix address space leak when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space for the vram, and maps it cacheable. If the device removed, or in the error path for device probing, the MMIO space is released but no unmap is done. Consequently the kernel address space for the mapping is leaked. Fix this by adding iounmap() calls in the device removal path, and in the error path during device probing.

Impact

Vector 3.x

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	6.0 (including)	6.1.132 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.84 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.20 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.13.8 (excluding)
cpe:2.3:o:linux:linux_kernel:6.14:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc5::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc6::::::

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

CVE-2025-21978

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools