CVE-2022-1263

A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

Database specific

{
    "cna_assigner": "redhat",
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/1xxx/CVE-2022-1263.json"
}

References

Affected packages

Git / github.com/torvalds/linux

Affected ranges

Type

GIT

Repo

https://github.com/torvalds/linux

Events

Introduced

b2d229d4ddb17db541098b83524d901257e93845

Fixed

5593473a1e6c743764b08e3b6071cb43b5cfa6c4

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "Fixed in kernel v5.18-rc3"
                },
                {
                    "last_affected": "Fixed in kernel v5.18-rc3"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandaloneSingleVersion"
        },
        {
            "range": [
                {
                    "fixed": "5593473a1e6c743764b08e3b6071cb43b5cfa6c4"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

Fixed in kernel v5.*

Fixed in kernel v5.18-rc3

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-1263.json"

vanir_signatures

[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
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                "124058985932258676746208023286689778433"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2022-1263-a50c09e5",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4",
        "target": {
            "file": "virt/kvm/kvm_main.c"
        }
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        "deprecated": false,
        "digest": {
            "function_hash": "270974885668887457538127732411651716852",
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        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4",
        "target": {
            "file": "virt/kvm/kvm_main.c",
            "function": "kvm_vcpu_destroy"
        }
    }
]

vanir_signatures_modified

"2026-10-22T07:24:41Z"