PUB-A-190877279

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Import Source
https://storage.googleapis.com/android-osv-test/PUB-A-190877279.json
JSON Data
https://api.test.osv.dev/v1/vulns/PUB-A-190877279
Aliases
Published
2021-10-01T00:00:00Z
Modified
2025-08-06T16:29:06.385449Z
Summary
[none]
Details

In _bpfringbuf_reserve of ringbuf.c, there is a possible out of bounds write due to a missing bounds check. 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
:2021-10-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "severity": "Moderate",
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/4b81ccebaeee885ab1aa1438133f2991e3a2b6ea"
    ],
    "spl": "2021-10-05",
    "types": [
        "EoP"
    ],
    "vanir_signatures": [
        {
            "signature_type": "Function",
            "digest": {
                "length": 855.0,
                "function_hash": "183729967604640829626352513401008393136"
            },
            "source": "https://android.googlesource.com/kernel/common/+/4b81ccebaeee885ab1aa1438133f2991e3a2b6ea",
            "target": {
                "function": "__bpf_ringbuf_reserve",
                "file": "kernel/bpf/ringbuf.c"
            },
            "id": "PUB-A-190877279-be596cc4",
            "signature_version": "v1",
            "deprecated": false
        },
        {
            "signature_type": "Line",
            "digest": {
                "line_hashes": [
                    "192741236581112911028087146785749077645",
                    "178244520072335451936189270906947903571",
                    "301616955728519727737405711715100561842",
                    "263076874577890106306520638709279565582"
                ],
                "threshold": 0.9
            },
            "source": "https://android.googlesource.com/kernel/common/+/4b81ccebaeee885ab1aa1438133f2991e3a2b6ea",
            "target": {
                "file": "kernel/bpf/ringbuf.c"
            },
            "id": "PUB-A-190877279-e9dc1edb",
            "signature_version": "v1",
            "deprecated": false
        }
    ]
}