CVE-2021-4207

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Source
https://cve.org/CVERecord?id=CVE-2021-4207
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-4207.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-4207
Downstream
Related
Published
2022-04-29T17:15:20.100Z
Modified
2026-05-15T12:04:25.548545490Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values cursor->header.width and cursor->header.height can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_FIELD",
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
                {
                    "last_affected": "10.0"
                },
                {
                    "last_affected": "11.0"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "cpes": [
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*",
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*"
            ],
            "vendor_product": "redhat:enterprise_linux",
            "extracted_events": [
                {
                    "last_affected": "8.0"
                },
                {
                    "last_affected": "8.0"
                }
            ]
        }
    ]
}
References

Affected packages