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CVE-2020-27661

Good to know:

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Date: June 2, 2021

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Language: C

Severity Score

Related Resources (12)

https://security-tracker.debian.org/tracker/CVE-2020-27661
https://security.alpinelinux.org/vuln/CVE-2020-27661
https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1770368.html
https://github.com/qemu/qemu/commit/bea2a9e3e00b275dc40cfa09c760c715b8753e03
https://git.qemu.org/?p=qemu.git;a=commit;h=bea2a9e3e00b275dc40cfa09c760c715b8753e03
https://security.netapp.com/advisory/ntap-20210720-0010/
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=bea2a9e3e00b275dc40cfa09c760c715b8753e03
https://bugzilla.redhat.com/show_bug.cgi?id=1890653
https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1770368.html
https://nvd.nist.gov/vuln/detail/CVE-2020-27661
https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html
https://www.mend.io/vulnerability-database/CVE-2020-27661

Severity Score

Weakness Type (CWE)

Divide By Zero

CWE-369

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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