PUB-A-186777253

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Import Source
https://storage.googleapis.com/android-osv-test/PUB-A-186777253.json
JSON Data
https://api.test.osv.dev/v1/vulns/PUB-A-186777253
Aliases
Published
2022-12-01T00:00:00Z
Modified
2025-08-06T16:29:06.385449Z
Summary
[none]
Details

In pppol2tpcreate of l2tpppp.c, there is a possible use after free due to a race condition. 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
:2022-12-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "vanir_signatures": [
        {
            "source": "https://android.googlesource.com/kernel/common/+/d02ba2a6110c5",
            "deprecated": true,
            "signature_version": "v1",
            "signature_type": "Function",
            "digest": {
                "function_hash": "293984007239053792393002895464783282289",
                "length": 708.0
            },
            "target": {
                "file": "net/l2tp/l2tp_ppp.c",
                "function": "pppol2tp_release"
            },
            "id": "PUB-A-186777253-041ee520"
        },
        {
            "source": "https://android.googlesource.com/kernel/common/+/d02ba2a6110c5",
            "deprecated": true,
            "signature_version": "v1",
            "signature_type": "Function",
            "digest": {
                "function_hash": "294323057906760878418382000322794272363",
                "length": 43.0
            },
            "target": {
                "file": "net/l2tp/l2tp_ppp.c",
                "function": "pppol2tp_session_close"
            },
            "id": "PUB-A-186777253-2e567b5b"
        },
        {
            "source": "https://android.googlesource.com/kernel/common/+/d02ba2a6110c5",
            "deprecated": true,
            "signature_version": "v1",
            "signature_type": "Function",
            "digest": {
                "function_hash": "179991157583453353224773042644488684840",
                "length": 3544.0
            },
            "target": {
                "file": "net/l2tp/l2tp_ppp.c",
                "function": "pppol2tp_connect"
            },
            "id": "PUB-A-186777253-a6479973"
        },
        {
            "source": "https://android.googlesource.com/kernel/common/+/d02ba2a6110c5",
            "deprecated": true,
            "signature_version": "v1",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
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            },
            "target": {
                "file": "net/l2tp/l2tp_ppp.c"
            },
            "id": "PUB-A-186777253-cfc1c5c7"
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    ],
    "types": [
        "EoP"
    ],
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/d02ba2a6110c5"
    ],
    "spl": "2022-12-05",
    "severity": "Moderate"
}