UBUNTU-CVE-2019-20808

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Source

https://ubuntu.com/security/CVE-2019-20808

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20808.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-20808

Upstream

CVE-2019-20808

Withdrawn

2025-07-18T16:45:36Z

Published

2020-12-31T01:15:00Z

Modified

2025-07-16T07:19:09Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
Ubuntu - low

Summary

[none]

Details

In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.

References

Affected packages

Ubuntu:20.04:LTS / qemu

Package

Name: qemu
Purl: pkg:deb/ubuntu/qemu@1:4.2-3ubuntu6.3?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1:4.2-3ubuntu6.3

Affected versions

1:4.*

1:4.0+dfsg-0ubuntu9

1:4.0+dfsg-0ubuntu10

1:4.2-1ubuntu1

1:4.2-1ubuntu2

1:4.2-3ubuntu1

1:4.2-3ubuntu2

1:4.2-3ubuntu3

1:4.2-3ubuntu4

1:4.2-3ubuntu5

1:4.2-3ubuntu6

1:4.2-3ubuntu6.1

1:4.2-3ubuntu6.2

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "qemu",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-block-extra-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-guest-agent-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-kvm",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-arm-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-common-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-data",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-gui-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-mips-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-misc-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-ppc-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-s390x-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-sparc-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-x86-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-x86-microvm",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-x86-microvm-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-system-x86-xen-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-user-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-user-static-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:4.2-3ubuntu6.3"
        },
        {
            "binary_name": "qemu-utils-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20808.json"