ASB-A-171705902

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Import Source
https://storage.googleapis.com/android-osv/ASB-A-171705902.json
JSON Data
https://api.osv.dev/v1/vulns/ASB-A-171705902
Aliases
Published
2021-08-01T00:00:00Z
Modified
2025-12-01T16:28:32.574217Z
Summary
[none]
Details

In fixuppistate_owner of futex.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional 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
:2021-08-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/6e7bfa046de8"
    ],
    "types": [
        "EoP"
    ],
    "severity": "High",
    "vanir_signatures": [
        {
            "id": "ASB-A-171705902-052b0830",
            "target": {
                "file": "kernel/futex.c",
                "function": "futex_lock_pi"
            },
            "digest": {
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                "length": 2430.0
            },
            "deprecated": false,
            "signature_type": "Function",
            "source": "https://android.googlesource.com/kernel/common/+/6e7bfa046de8",
            "signature_version": "v1"
        },
        {
            "id": "ASB-A-171705902-254205f3",
            "target": {
                "file": "kernel/futex.c",
                "function": "__fixup_pi_state_owner"
            },
            "digest": {
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            },
            "deprecated": false,
            "signature_type": "Function",
            "source": "https://android.googlesource.com/kernel/common/+/6e7bfa046de8",
            "signature_version": "v1"
        },
        {
            "id": "ASB-A-171705902-2c1fe69d",
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        {
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                "function": "futex_wait_requeue_pi"
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}