ASB-A-174737742

See a problem?
Import Source
https://storage.googleapis.com/android-osv-test/ASB-A-174737742.json
JSON Data
https://api.test.osv.dev/v1/vulns/ASB-A-174737742
Aliases
Published
2021-04-01T00:00:00Z
Modified
2025-08-06T16:29:06.385449Z
Summary
[none]
Details

In blkdevget of blockdev.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege 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
:2021-04-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "vanir_signatures": [
        {
            "id": "ASB-A-174737742-1030258c",
            "deprecated": false,
            "digest": {
                "length": 1012.0,
                "function_hash": "59860384918011909271086049070330711300"
            },
            "target": {
                "file": "fs/block_dev.c",
                "function": "blkdev_get"
            },
            "source": "https://android.googlesource.com/kernel/common/+/49289b1fa5a67011",
            "signature_type": "Function",
            "signature_version": "v1"
        },
        {
            "id": "ASB-A-174737742-339e9e91",
            "deprecated": false,
            "digest": {
                "line_hashes": [
                    "90846224778272808729882967313166842834",
                    "210455391159847382813861124562743997143",
                    "248246878076002800437824119162846272817",
                    "23941645145287169093863723333436811838",
                    "252544520785248161093029773916555556162",
                    "43255978613839031448674459723930450533",
                    "56667024128294808584466809983137080536",
                    "278232631818054803265387433573119926578",
                    "99037826654964562077051696485955107269",
                    "303513137588777170704921729365398102135",
                    "323816049049426435613601578818162373908",
                    "34162908940696437762784001955729682086",
                    "186996799984975004504814502302763366766",
                    "229949618134920860859124086870874959161",
                    "76488741736126913303953636221164194601",
                    "175714366343592637822288560052604907008",
                    "248146019100149484551114728592840684680",
                    "199636741300429016525280405751632169433",
                    "284384089326924488323030925409834760661"
                ],
                "threshold": 0.9
            },
            "target": {
                "file": "fs/block_dev.c"
            },
            "source": "https://android.googlesource.com/kernel/common/+/49289b1fa5a67011",
            "signature_type": "Line",
            "signature_version": "v1"
        },
        {
            "id": "ASB-A-174737742-7114383f",
            "deprecated": false,
            "digest": {
                "length": 2759.0,
                "function_hash": "134906959904962113697106075111122462301"
            },
            "target": {
                "file": "fs/block_dev.c",
                "function": "__blkdev_get"
            },
            "source": "https://android.googlesource.com/kernel/common/+/49289b1fa5a67011",
            "signature_type": "Function",
            "signature_version": "v1"
        }
    ],
    "types": [
        "EoP"
    ],
    "spl": "2021-04-05",
    "severity": "High",
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/49289b1fa5a67011"
    ]
}