ASB-A-169505740

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Import Source
https://storage.googleapis.com/android-osv-test/ASB-A-169505740.json
JSON Data
https://api.test.osv.dev/v1/vulns/ASB-A-169505740
Aliases
Published
2021-01-01T00:00:00Z
Modified
2025-08-06T16:29:06.385449Z
Summary
[none]
Details

In _speculationctrl_update of process.c, there is a possible way to disable Speculative Store Bypass Disable due to a logic error, which allows for side channel information disclosure. This could lead to local information disclosure 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
:2021-01-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/dbbe2ad02e9df26e372f38cc3e70dab9222c832e"
    ],
    "severity": "High",
    "vanir_signatures": [
        {
            "digest": {
                "function_hash": "250710125756048984842722933078406547396",
                "length": 669.0
            },
            "id": "ASB-A-169505740-5369071a",
            "signature_type": "Function",
            "signature_version": "v1",
            "source": "https://android.googlesource.com/kernel/common/+/dbbe2ad02e9df26e372f38cc3e70dab9222c832e",
            "target": {
                "file": "arch/x86/kernel/process.c",
                "function": "__speculation_ctrl_update"
            },
            "deprecated": false
        },
        {
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "223598936207650923025435889555090071458",
                    "51941984143126213303642955956130225496",
                    "332010218412004142622122792097786390298",
                    "196807880300784702122698364023331092448",
                    "219204688460491980966169296265965354595",
                    "187556765688784133821185655933544331868",
                    "174182776923154971239561183807260016612",
                    "268988646742004861009343260164382758727",
                    "272004541045723271693685430100529553213",
                    "316936303680016290319045399938297543663",
                    "14053540321143755774389207234345173957",
                    "89672397712851798756268444260495039722",
                    "198143662356294845207255966043940845345",
                    "184513831414642033403474974711809925854"
                ]
            },
            "id": "ASB-A-169505740-63e165db",
            "signature_type": "Line",
            "signature_version": "v1",
            "source": "https://android.googlesource.com/kernel/common/+/dbbe2ad02e9df26e372f38cc3e70dab9222c832e",
            "target": {
                "file": "arch/x86/kernel/process.c"
            },
            "deprecated": false
        }
    ],
    "types": [
        "ID"
    ],
    "spl": "2021-01-05"
}