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/cve-osv-conversion/osv-output/CVE-2022-1263.json"

vanir_signatures

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        "digest":  {
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            ],
            "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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        "source":  "https://github.com/torvalds/linux/commit/5593473a1e6c743764b08e3b6071cb43b5cfa6c4",
        "target":  {
            "file":  "virt/kvm/kvm_main.c",
            "function":  "kvm_vcpu_destroy"
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]

vanir_signatures_modified

"2026-10-21T08:15:06Z"