ASB-A-279739439

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Import Source
https://storage.googleapis.com/android-osv/ASB-A-279739439.json
JSON Data
https://api.osv.dev/v1/vulns/ASB-A-279739439
Aliases
Published
2023-08-01T00:00:00Z
Modified
2025-10-24T15:26:23.750784Z
Summary
[none]
Details

In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

References

Affected packages

Android / :linux_kernel:

Package

Name
:linux_kernel:

Affected ranges

Type
ECOSYSTEM
Events
Introduced
:0
Fixed
:2023-08-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/b35a06182451f",
        "https://android.googlesource.com/kernel/common/+/53625a846a7b4"
    ],
    "severity": "Critical",
    "types": [
        "EoP"
    ],
    "vanir_signatures": [
        {
            "signature_type": "Function",
            "digest": {
                "function_hash": "190076140231989935362870905066839385057",
                "length": 693.0
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            "deprecated": false,
            "signature_version": "v1",
            "source": "https://android.googlesource.com/kernel/common/+/53625a846a7b4",
            "target": {
                "function": "__pkvm_host_reclaim_page",
                "file": "arch/arm64/kvm/hyp/nvhe/mem_protect.c"
            },
            "id": "ASB-A-279739439-0954dee9"
        },
        {
            "signature_type": "Line",
            "digest": {
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            "deprecated": false,
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            "source": "https://android.googlesource.com/kernel/common/+/53625a846a7b4",
            "target": {
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            },
            "id": "ASB-A-279739439-09fa8bb1"
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            "source": "https://android.googlesource.com/kernel/common/+/53625a846a7b4",
            "target": {
                "function": "hyp_get_page_state",
                "file": "arch/arm64/kvm/hyp/nvhe/mem_protect.c"
            },
            "id": "ASB-A-279739439-0a14c72f"
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            "source": "https://android.googlesource.com/kernel/common/+/53625a846a7b4",
            "target": {
                "function": "guest_get_page_state",
                "file": "arch/arm64/kvm/hyp/nvhe/mem_protect.c"
            },
            "id": "ASB-A-279739439-4e48c2d0"
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            "target": {
                "function": "host_get_page_state",
                "file": "arch/arm64/kvm/hyp/nvhe/mem_protect.c"
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            "id": "ASB-A-279739439-a45e31bd"
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            "target": {
                "function": "__guest_request_page_transition",
                "file": "arch/arm64/kvm/hyp/nvhe/mem_protect.c"
            },
            "id": "ASB-A-279739439-ba6d7f4e"
        }
    ],
    "spl": "2023-08-05"
}