CVE-2020-27661
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.31% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 24.1% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-06-02 15:25Z5 YR AGO
- Last updated
- 2024-08-04 16:18Z2 YR AGO
- Reserved
- 2020-10-22
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-369Divide By ZeroBase
- Data version
- 5.1
- Document digest
- d772a289a8fd806060591b3996cfbdd855e17eadc7886e79256abe7e9e6bab8e
05 Affected products
06 References
- lists.nongnu.orghttps://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1890653
- www.mail-archive.comhttps://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1770368.html
- git.qemu.orghttps://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=bea2a9e3e00b275dc40cfa09c760c715b8753e03
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20210720-0010/
07 Fixed in
Debian 12
- qemu Fixed in 1:5.2+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- qemu Fixed in 1:5.2+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- qemu Fixed in 1:5.2+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.