UBUNTU-CVE-2018-7858

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Source
https://ubuntu.com/security/CVE-2018-7858
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7858.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-7858
Upstream
Downstream
Related
Published
2018-03-12T00:00:00Z
Modified
2025-09-08T16:44:48Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.

References

Affected packages

Ubuntu:18.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu@1:2.11+dfsg-1ubuntu7.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2.11+dfsg-1ubuntu7.1

Affected versions

1:2.*

1:2.10+dfsg-0ubuntu3
1:2.10+dfsg-0ubuntu4
1:2.10+dfsg-0ubuntu5
1:2.11+dfsg-1ubuntu1
1:2.11+dfsg-1ubuntu2
1:2.11+dfsg-1ubuntu4
1:2.11+dfsg-1ubuntu5
1:2.11+dfsg-1ubuntu6
1:2.11+dfsg-1ubuntu7

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-block-extra"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-guest-agent"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-kvm"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system-arm"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system-common"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system-mips"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system-misc"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system-ppc"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system-s390x"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system-sparc"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-system-x86"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-user"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-user-binfmt"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-user-static"
        },
        {
            "binary_version": "1:2.11+dfsg-1ubuntu7.1",
            "binary_name": "qemu-utils"
        }
    ]
}