CVE-2022-49883

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Source
https://cve.org/CVERecord?id=CVE-2022-49883
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49883.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49883
Downstream
Published
2025-05-01T14:10:29.804Z
Modified
2026-03-11T08:06:39.568038Z
Summary
KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format
Details

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format

On 64 bit host, if the guest doesn't have X86FEATURELM, KVM will access 16 gprs to 32-bit smram image, causing out-ouf-bound ram access.

On 32 bit host, the rsmloadstate64/entersmmsavestate_64 is compiled out, thus access overflow can't happen.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49883.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b443183a25ab61840a12de92f8822849e017b9c8
Fixed
a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494
Fixed
696db303e54f7352623d9f640e6c51d8fa9d5588

Affected versions

v5.*
v5.19
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v6.*
v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.0.1
v6.0.2
v6.0.3
v6.0.4
v6.0.5
v6.0.6
v6.0.7
v6.1-rc1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49883.json"
vanir_signatures 
[
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@696db303e54f7352623d9f640e6c51d8fa9d5588",
        "target": {
            "file": "arch/x86/kvm/emulate.c",
            "function": "rsm_load_state_64"
        },
        "deprecated": false,
        "id": "CVE-2022-49883-1737a9fc",
        "digest": {
            "length": 2247.0,
            "function_hash": "327275372153740590862775264269118499774"
        },
        "signature_version": "v1",
        "signature_type": "Function"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@696db303e54f7352623d9f640e6c51d8fa9d5588",
        "target": {
            "file": "arch/x86/kvm/emulate.c"
        },
        "deprecated": false,
        "id": "CVE-2022-49883-2342ca7f",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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            ]
        },
        "signature_version": "v1",
        "signature_type": "Line"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494",
        "target": {
            "file": "arch/x86/kvm/emulate.c",
            "function": "rsm_load_state_32"
        },
        "deprecated": false,
        "id": "CVE-2022-49883-4358b087",
        "digest": {
            "length": 1920.0,
            "function_hash": "270519376355289887941581162814274516478"
        },
        "signature_version": "v1",
        "signature_type": "Function"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494",
        "target": {
            "file": "arch/x86/kvm/emulate.c"
        },
        "deprecated": false,
        "id": "CVE-2022-49883-48f08966",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "202622373811172532544175407197280705274",
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    },
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494",
        "target": {
            "file": "arch/x86/kvm/emulate.c",
            "function": "rsm_load_state_64"
        },
        "deprecated": false,
        "id": "CVE-2022-49883-a659e8d9",
        "digest": {
            "length": 2247.0,
            "function_hash": "327275372153740590862775264269118499774"
        },
        "signature_version": "v1",
        "signature_type": "Function"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@696db303e54f7352623d9f640e6c51d8fa9d5588",
        "target": {
            "file": "arch/x86/kvm/emulate.c",
            "function": "rsm_load_state_32"
        },
        "deprecated": false,
        "id": "CVE-2022-49883-fac6d0a7",
        "digest": {
            "length": 1920.0,
            "function_hash": "270519376355289887941581162814274516478"
        },
        "signature_version": "v1",
        "signature_type": "Function"
    }
]