ASB-A-169505929

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Import Source
https://storage.googleapis.com/android-osv-test/ASB-A-169505929.json
JSON Data
https://api.test.osv.dev/v1/vulns/ASB-A-169505929
Aliases
Published
2021-10-01T00:00:00Z
Modified
2025-08-06T16:29:06.385449Z
Summary
[none]
Details

In ibprctlset of bugs.c, there is a possible way to re-enable indirect branch speculation due to a permissions bypass. This could lead to local information disclosure via a Spectre v2 attack 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
:2021-10-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "types": [
        "ID"
    ],
    "severity": "High",
    "vanir_signatures": [
        {
            "source": "https://android.googlesource.com/kernel/common/+/4d8df8cbb9156b0a0ab3f802b80cb5db57acc0bf",
            "deprecated": false,
            "signature_type": "Function",
            "signature_version": "v1",
            "digest": {
                "function_hash": "337582401683084583128489187843894130475",
                "length": 949.0
            },
            "id": "ASB-A-169505929-8ef931fc",
            "target": {
                "file": "arch/x86/kernel/cpu/bugs.c",
                "function": "ib_prctl_set"
            }
        },
        {
            "source": "https://android.googlesource.com/kernel/common/+/4d8df8cbb9156b0a0ab3f802b80cb5db57acc0bf",
            "deprecated": false,
            "signature_type": "Line",
            "signature_version": "v1",
            "digest": {
                "line_hashes": [
                    "96293375478824141631754960072640988953",
                    "36152342845344979984605625203388829799",
                    "8460226663272733964146612779976990208",
                    "138461365038257326585673897414895695562",
                    "47823671850491995274274841138110324739",
                    "237551085397149107198675647758349576371"
                ],
                "threshold": 0.9
            },
            "id": "ASB-A-169505929-e316d259",
            "target": {
                "file": "arch/x86/kernel/cpu/bugs.c"
            }
        }
    ],
    "spl": "2021-10-05",
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/4d8df8cbb9156b0a0ab3f802b80cb5db57acc0bf"
    ]
}