Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-37996

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
29/05/2025
Last modified:
14/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()<br /> <br /> Commit fce886a60207 ("KVM: arm64: Plumb the pKVM MMU in KVM") made the<br /> initialization of the local memcache variable in user_mem_abort()<br /> conditional, leaving a codepath where it is used uninitialized via<br /> kvm_pgtable_stage2_map().<br /> <br /> This can fail on any path that requires a stage-2 allocation<br /> without transition via a permission fault or dirty logging.<br /> <br /> Fix this by making sure that memcache is always valid.

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:*:*:*:*:*:*:*:* 6.14 (including) 6.14.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools