CVE-2021-3682

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Source
https://cve.org/CVERecord?id=CVE-2021-3682
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3682.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-3682
Downstream
Related
Published
2021-08-05T20:15:09.963Z
Modified
2026-07-08T06:02:37.203934686Z
Severity
  • 8.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "9.0"
                },
                {
                    "last_affected": "9.0"
                },
                {
                    "introduced": "10.0"
                },
                {
                    "last_affected": "10.0"
                },
                {
                    "introduced": "11.0"
                },
                {
                    "last_affected": "11.0"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "debian:debian_linux",
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ]
        },
        {
            "extracted_events": [
                {
                    "introduced": "8.0"
                },
                {
                    "last_affected": "8.0"
                },
                {
                    "introduced": "8.0"
                },
                {
                    "last_affected": "8.0"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "redhat:enterprise_linux",
            "cpes": [
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*",
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*"
            ]
        }
    ]
}
References

Affected packages

Git / github.com/qemu/qemu

Affected ranges

Type
GIT
Repo
https://github.com/qemu/qemu
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f9baca549e44791be0dd98de15add3d8452a8af0
Introduced
f2da205cb4142259d9bc6b9d4596ebbe2426fe49
Last affected
f2da205cb4142259d9bc6b9d4596ebbe2426fe49
Database specific 
{
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ],
    "cpe": [
        "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:qemu:qemu:6.1.0:rc1:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "6.1.0"
        },
        {
            "introduced": "6.1.0-rc1"
        },
        {
            "last_affected": "6.1.0-rc1"
        }
    ]
}

Affected versions

6.*
6.1.0-rc1
v6.*
v6.1.0-rc1
v6.1.0-rc2
v6.1.0-rc3
v6.1.0-rc4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3682.json"

Git / gitlab.com/qemu-project/qemu

Affected ranges

Type
GIT
Repo
https://gitlab.com/qemu-project/qemu
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f9baca549e44791be0dd98de15add3d8452a8af0
Introduced
f2da205cb4142259d9bc6b9d4596ebbe2426fe49
Last affected
f2da205cb4142259d9bc6b9d4596ebbe2426fe49
Database specific 
{
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ],
    "cpe": [
        "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:qemu:qemu:6.1.0:rc1:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "6.1.0"
        },
        {
            "introduced": "6.1.0-rc1"
        },
        {
            "last_affected": "6.1.0-rc1"
        }
    ]
}

Affected versions

6.*
6.1.0-rc1
v6.*
v6.1.0-rc1
v6.1.0-rc2
v6.1.0-rc3
v6.1.0-rc4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3682.json"