PUB-A-234475629

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Import Source
https://storage.googleapis.com/android-osv-test/PUB-A-234475629.json
JSON Data
https://api.osv.dev/v1/vulns/PUB-A-234475629
Aliases
Published
2022-12-01T00:00:00Z
Modified
2024-09-19T16:42:08.825107Z
Summary
LoadPin bypass via dm-verity table reload
Details

In verity_target of dm-verity-target.c, there is a possible way to modify read-only files due to a missing permission 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
:2022-12-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "vanir_signatures": [
        {
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "6750721687830903541387938765679298548",
                    "129728381512143920073312385761700384458",
                    "136290462382097668927891831171427395639",
                    "120423728662642149267013688500226027288"
                ]
            },
            "id": "PUB-A-234475629-147d63fb",
            "source": "https://android.googlesource.com/kernel/common/+/678d7a09525c2edb6b2436c1d5a9a0b9292e31d7",
            "deprecated": false,
            "signature_version": "v1",
            "target": {
                "file": "drivers/md/dm-verity-target.c"
            },
            "signature_type": "Line"
        },
        {
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "101980834836173696207231592808249676659",
                    "206763611688154899365995941677988173469",
                    "96004355582768959731363167358732599836",
                    "244026125455597786919918268467767645320"
                ]
            },
            "id": "PUB-A-234475629-5db060ca",
            "source": "https://android.googlesource.com/kernel/common/+/952141fb9237ec54cda66e04622725daae29d273",
            "deprecated": false,
            "signature_version": "v1",
            "target": {
                "file": "drivers/md/dm-verity-target.c"
            },
            "signature_type": "Line"
        }
    ],
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/678d7a09525c2edb6b2436c1d5a9a0b9292e31d7",
        "https://android.googlesource.com/kernel/common/+/952141fb9237ec54cda66e04622725daae29d273"
    ],
    "spl": "2022-12-05",
    "severity": "Moderate",
    "types": [
        "EoP"
    ]
}