CVE-2025-37996

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

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c	Patch
https://git.kernel.org/stable/c/a26d50f8a4a5049e956984797b5d0dedea4bbb18	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	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::::::

History

No history.

Information

Published : 2025-05-29 14:15

Updated : 2025-11-14 16:58

NVD link : CVE-2025-37996

Mitre link : CVE-2025-37996

CVE.ORG link : CVE-2025-37996

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

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