ASB-A-216481035

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Import Source
https://storage.googleapis.com/android-osv/ASB-A-216481035.json
JSON Data
https://api.osv.dev/v1/vulns/ASB-A-216481035
Aliases
Published
2022-05-01T00:00:00Z
Modified
2025-10-27T15:26:11.562129Z
Summary
[none]
Details

In mmcblkread_single of block.c, there is a possible way to read kernel heap memory due to uninitialized data. This could lead to local information disclosure if reading from an SD card that triggers errors, 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
:2022-05-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "types": [
        "ID"
    ],
    "spl": "2022-05-05",
    "severity": "High",
    "vanir_signatures": [
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            "deprecated": false,
            "digest": {
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                "function_hash": "290459416158443490269445564131014734238"
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            "signature_version": "v1",
            "target": {
                "function": "mmc_blk_read_single",
                "file": "drivers/mmc/core/block.c",
                "truncated_path_level": 1.0
            },
            "signature_type": "Function",
            "source": "https://android.googlesource.com/kernel/common/+/8f66dc1a78a743ea3c3f039500d2aa0cddd776d5"
        },
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            "id": "ASB-A-216481035-3203c8b1",
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            "digest": {
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            "signature_version": "v1",
            "target": {
                "function": "mmc_blk_read_single",
                "file": "drivers/mmc/core/block.c",
                "truncated_path_level": 1.0
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            "signature_type": "Function",
            "source": "https://android.googlesource.com/kernel/common/+/8a3679a75730c1babde6bf63e35d227f3305bd90"
        },
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        },
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    "fixes": [
        "https://android.googlesource.com/kernel/common/+/2aea7dc18f4249dc53e53598db50b59c26a60aeb",
        "https://android.googlesource.com/kernel/common/+/8a3679a75730c1babde6bf63e35d227f3305bd90",
        "https://android.googlesource.com/kernel/common/+/8f66dc1a78a743ea3c3f039500d2aa0cddd776d5"
    ]
}