UBUNTU-CVE-2021-3750

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Source
https://ubuntu.com/security/CVE-2021-3750
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3750.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3750
Upstream
Downstream
Related
Published
2022-05-02T19:15:00Z
Modified
2025-07-16T07:19:54.841685Z
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
  • Ubuntu - medium
Summary
[none]
Details

A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the controller's registers and trigger undesirable actions (such as reset) while the device is still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects QEMU versions before 7.0.0.

References

Affected packages

Ubuntu:18.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu@1:2.11+dfsg-1ubuntu7.41?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2.11+dfsg-1ubuntu7.41

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
1:2.11+dfsg-1ubuntu7.1
1:2.11+dfsg-1ubuntu7.2
1:2.11+dfsg-1ubuntu7.3
1:2.11+dfsg-1ubuntu7.4
1:2.11+dfsg-1ubuntu7.5
1:2.11+dfsg-1ubuntu7.6
1:2.11+dfsg-1ubuntu7.7
1:2.11+dfsg-1ubuntu7.8
1:2.11+dfsg-1ubuntu7.9
1:2.11+dfsg-1ubuntu7.10
1:2.11+dfsg-1ubuntu7.12
1:2.11+dfsg-1ubuntu7.13
1:2.11+dfsg-1ubuntu7.14
1:2.11+dfsg-1ubuntu7.15
1:2.11+dfsg-1ubuntu7.17
1:2.11+dfsg-1ubuntu7.18
1:2.11+dfsg-1ubuntu7.19
1:2.11+dfsg-1ubuntu7.20
1:2.11+dfsg-1ubuntu7.21
1:2.11+dfsg-1ubuntu7.22
1:2.11+dfsg-1ubuntu7.23
1:2.11+dfsg-1ubuntu7.25
1:2.11+dfsg-1ubuntu7.26
1:2.11+dfsg-1ubuntu7.27
1:2.11+dfsg-1ubuntu7.28
1:2.11+dfsg-1ubuntu7.29
1:2.11+dfsg-1ubuntu7.31
1:2.11+dfsg-1ubuntu7.32
1:2.11+dfsg-1ubuntu7.33
1:2.11+dfsg-1ubuntu7.34
1:2.11+dfsg-1ubuntu7.35
1:2.11+dfsg-1ubuntu7.36
1:2.11+dfsg-1ubuntu7.37
1:2.11+dfsg-1ubuntu7.38
1:2.11+dfsg-1ubuntu7.39
1:2.11+dfsg-1ubuntu7.40

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qemu",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-block-extra-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-guest-agent-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-kvm",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-arm-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-common-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-mips-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-misc-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-ppc-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-s390x-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-sparc-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-system-x86-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-user-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-user-static-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        },
        {
            "binary_name": "qemu-utils-dbgsym",
            "binary_version": "1:2.11+dfsg-1ubuntu7.41"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu@1:4.2-3ubuntu6.24?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.2-3ubuntu6.24

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
1:4.2-3ubuntu6.3
1:4.2-3ubuntu6.4
1:4.2-3ubuntu6.5
1:4.2-3ubuntu6.6
1:4.2-3ubuntu6.7
1:4.2-3ubuntu6.8
1:4.2-3ubuntu6.9
1:4.2-3ubuntu6.10
1:4.2-3ubuntu6.11
1:4.2-3ubuntu6.12
1:4.2-3ubuntu6.14
1:4.2-3ubuntu6.15
1:4.2-3ubuntu6.16
1:4.2-3ubuntu6.17
1:4.2-3ubuntu6.18
1:4.2-3ubuntu6.19
1:4.2-3ubuntu6.21
1:4.2-3ubuntu6.23

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qemu",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-block-extra-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-guest-agent-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-kvm",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-arm-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-common-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-data",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-gui-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-mips-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-misc-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-ppc-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-s390x-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-sparc-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-x86-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-x86-microvm",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-x86-microvm-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-system-x86-xen-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-user-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-user-static-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:4.2-3ubuntu6.24"
        },
        {
            "binary_name": "qemu-utils-dbgsym",
            "binary_version": "1:4.2-3ubuntu6.24"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu@1:6.2+dfsg-2ubuntu6.6?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:6.2+dfsg-2ubuntu6.6

Affected versions

1:6.*

1:6.0+dfsg-2expubuntu1
1:6.0+dfsg-2expubuntu2
1:6.0+dfsg-2expubuntu4
1:6.2+dfsg-2ubuntu5
1:6.2+dfsg-2ubuntu6
1:6.2+dfsg-2ubuntu6.1
1:6.2+dfsg-2ubuntu6.2
1:6.2+dfsg-2ubuntu6.3
1:6.2+dfsg-2ubuntu6.4
1:6.2+dfsg-2ubuntu6.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qemu",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-block-extra-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-guest-agent-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-arm-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-common-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-data",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-gui-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-mips-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-misc-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-ppc-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-s390x-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-sparc-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-x86-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-x86-microvm",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-system-x86-xen-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-user-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-user-static-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        },
        {
            "binary_name": "qemu-utils-dbgsym",
            "binary_version": "1:6.2+dfsg-2ubuntu6.6"
        }
    ],
    "availability": "No subscription required"
}