ASB-A-260821414

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Import Source
https://storage.googleapis.com/android-osv/ASB-A-260821414.json
JSON Data
https://api.osv.dev/v1/vulns/ASB-A-260821414
Aliases
Published
2023-05-01T00:00:00Z
Modified
2024-08-07T19:30:11.016648Z
Summary
EFI Linux/arm64 code can be subverted to overwrite the shadow call stack pointer
Details

In _efirtasmwrapper of efi-rt-wrapper.S, there is a possible bypass of shadow stack protection due to a logic error in the code. 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
:2023-05-05

Affected versions

Other

Kernel

Ecosystem specific 

{
    "vanir_signatures": [
        {
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "179337840841991355642887043988593067606",
                    "5773807457505110754444059043052909632",
                    "282730260334074690969290374034554911948",
                    "134253192418214020651208017925988575156",
                    "232811901045737453688945005799129261957",
                    "218620793557511025058338371865771396683",
                    "339105349812813529627753795168013015537",
                    "276077201739349405452701792039390901192",
                    "253288503435522497287142918487731045661",
                    "226981391358113279537999084226866317163",
                    "88902760063645305806195411021768245062"
                ]
            },
            "id": "ASB-A-260821414-eb7a78e9",
            "source": "https://android.googlesource.com/kernel/common/+/ec6fe823507b2f6ef4a58f3a9bee9a5ec086c32c",
            "deprecated": false,
            "signature_version": "v1",
            "target": {
                "file": "arch/arm64/include/asm/efi.h"
            },
            "signature_type": "Line"
        }
    ],
    "fixes": [
        "https://android.googlesource.com/kernel/common/+/ec6fe823507b2f6ef4a58f3a9bee9a5ec086c32c",
        "https://android.googlesource.com/kernel/common/+/984241bdc04f401c423005a52eb013b00e19358c"
    ],
    "spl": "2023-05-05",
    "severity": "High",
    "types": [
        "EoP"
    ]
}