CVE-2020-25723
A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged
02 Description
A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged
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
- 0.36% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 30.0% of scored records. A rank, not a probability.
- NVD base score
- 3.2 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
- 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
- 2020-12-02 00:52Z5 YR AGO
- Last updated
- 2024-08-04 15:40Z2 YR AGO
- Reserved
- 2020-09-16
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-617Reachable AssertionBase
- Data version
- 5.1
- Document digest
- 29bbc61deceb87288693429570b25230ab9abecf56c181c357858b1c9fabed53
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1898579
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20201218-0004/
- www.openwall.com[oss-security] 20201222 CVE-2020-25723 QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.chttp://www.openwall.com/lists/oss-security/2020/12/22/1
- lists.debian.org[debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security updatehttps://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
07 Fixed in
AlmaLinux 8
- hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- hivex-devel Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- libguestfs-winsupport Fixed
A version is affected if any line below covers it.
- Affected before 8.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 8.2-1.module_el8.5.0+2608+72063365
- libiscsi Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libiscsi-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libiscsi-utils Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libnbd Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- libnbd-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- libvirt-dbus Fixed
A version is affected if any line below covers it.
- Affected before 1.3.0-2.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.3.0-2.module_el8.5.0+2608+72063365
- Affected before 1.3.0-2.module_el8.6.0+2880+7d9e3703
- nbdfuse Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- nbdkit Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-bash-completion Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-basic-filters Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-basic-plugins Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-curl-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-devel Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-example-plugins Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-gzip-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-linuxdisk-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-python-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-server Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-ssh-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-vddk-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-xz-filter Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- netcf Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- netcf-devel Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- netcf-libs Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- ocaml-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- ocaml-hivex-devel Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- ocaml-libguestfs Fixed in 1:1.40.2-27.module_el8.4.0+2358+630e803b.alma
- ocaml-libguestfs-devel Fixed in 1:1.40.2-27.module_el8.4.0+2358+630e803b.alma
- ocaml-libnbd Fixed in 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- ocaml-libnbd-devel Fixed in 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- perl-Sys-Virt Fixed
A version is affected if any line below covers it.
- Affected before 6.0.0-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 6.0.0-1.module_el8.5.0+2608+72063365
- perl-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- python3-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- python3-libnbd Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- python3-libvirt Fixed
A version is affected if any line below covers it.
- Affected before 6.0.0-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 6.0.0-1.module_el8.5.0+2608+72063365
- ruby-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- seabios Fixed in 1.13.0-2.module_el8.5.0+2608+72063365
6 further packages in AlmaLinux 8 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- hivex-devel Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- libguestfs-winsupport Fixed
A version is affected if any line below covers it.
- Affected before 8.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 8.2-1.module_el8.5.0+2608+72063365
- libiscsi Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libiscsi-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libiscsi-utils Fixed
A version is affected if any line below covers it.
- Affected before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.18.0-8.module_el8.5.0+2608+72063365
- Affected before 1.18.0-8.module_el8.6.0+2880+7d9e3703
- libnbd Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- libnbd-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- libvirt-dbus Fixed
A version is affected if any line below covers it.
- Affected before 1.3.0-2.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.3.0-2.module_el8.5.0+2608+72063365
- Affected before 1.3.0-2.module_el8.6.0+2880+7d9e3703
- nbdfuse Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- nbdkit Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-bash-completion Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-basic-filters Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-basic-plugins Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-curl-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-devel Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-example-plugins Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-gzip-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-linuxdisk-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-python-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-server Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-ssh-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-vddk-plugin Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- nbdkit-xz-filter Fixed in 1.16.2-4.module_el8.5.0+2608+72063365
- netcf Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- netcf-devel Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- netcf-libs Fixed
A version is affected if any line below covers it.
- Affected before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
- Affected before 0.2.8-12.module_el8.5.0+2608+72063365
- Affected before 0.2.8-12.module_el8.6.0+2880+7d9e3703
- ocaml-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- ocaml-hivex-devel Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- ocaml-libguestfs Fixed in 1:1.40.2-27.module_el8.4.0+2358+630e803b.alma
- ocaml-libguestfs-devel Fixed in 1:1.40.2-27.module_el8.4.0+2358+630e803b.alma
- ocaml-libnbd Fixed in 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- ocaml-libnbd-devel Fixed in 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- perl-Sys-Virt Fixed
A version is affected if any line below covers it.
- Affected before 6.0.0-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 6.0.0-1.module_el8.5.0+2608+72063365
- perl-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- python3-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- python3-libnbd Fixed
A version is affected if any line below covers it.
- Affected before 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 1.2.2-1.module_el8.5.0+2608+72063365
- python3-libvirt Fixed
A version is affected if any line below covers it.
- Affected before 6.0.0-1.module_el8.3.0+2048+e7a0a3ea
- Affected before 6.0.0-1.module_el8.5.0+2608+72063365
- ruby-hivex Fixed in 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
- seabios Fixed in 1.13.0-2.module_el8.5.0+2608+72063365
6 further packages in CloudLinux 8 not shown (first 40 listed).
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
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.
Ubuntu 16.04 LTS
- qemu Fixed in 1:2.5+dfsg-5ubuntu10.48
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- qemu Fixed in 1:2.11+dfsg-1ubuntu7.34
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- qemu Fixed in 1:4.2-3ubuntu6.10
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- qemu Fixed in 2.0.0+dfsg-2ubuntu1.47+esm6Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. 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.