Skip to content
Fencer Vulns
high 7.5

CVE-2023-2680 json

Dma reentrancy issue (incomplete fix for cve-2021-3750)

published 2023-09-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34144

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750.

Patch / fix

  • qemu-kvm RHEL 9 17:8.0.0-16.el9_3
  • qemu-img RHEL 9 17:8.0.0-16.el9_3
  • qemu-kvm-core RHEL 9 17:8.0.0-16.el9_3
  • qemu-kvm-tools RHEL 9 17:8.0.0-16.el9_3
  • qemu-pr-helper RHEL 9 17:8.0.0-16.el9_3
  • qemu-kvm-common RHEL 9 17:8.0.0-16.el9_3
  • qemu-guest-agent RHEL 9 17:8.0.0-16.el9_3
  • qemu-kvm-audio-pa RHEL 9 17:8.0.0-16.el9_3

red hat advisories RHSA-2023:6368

  • qemu-kvm AlmaLinux 9 17:8.0.0-16.el9_3.alma.1
  • qemu-img AlmaLinux 9 17:8.0.0-16.el9_3.alma.1
  • qemu-kvm-core AlmaLinux 9 17:8.0.0-16.el9_3.alma.1
  • qemu-kvm-tools AlmaLinux 9 17:8.0.0-16.el9_3.alma.1
  • qemu-pr-helper AlmaLinux 9 17:8.0.0-16.el9_3.alma.1
  • qemu-kvm-common AlmaLinux 9 17:8.0.0-16.el9_3.alma.1
  • qemu-guest-agent AlmaLinux 9 17:8.0.0-16.el9_3.alma.1
  • qemu-kvm-audio-pa AlmaLinux 9 17:8.0.0-16.el9_3.alma.1

almalinux advisories ALSA-2023:6368

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-2680 updated cvss 7.5

QEMU: hcd-ehci: DMA reentrancy issue (incomplete fix for CVE-2021-3750)

  • Red Hat Enterprise Linux AppStream (v. 9) qemu-img 8.0.0-16.el9_3, qemu-kvm 8.0.0-16.el9_3, qemu-kvm-core 8.0.0-16.el9_3, qemu-kvm-tools 8.0.0-16.el9_3, qemu-pr-helper 8.0.0-16.el9_3, qemu-kvm-common 8.0.0-16.el9_3, +13 more
    fixed: vendor fix RHSA-2023:6368
  • Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-img-ma, qemu-kvm-ma, qemu-kvm-tools, +5 more Red Hat Enterprise Linux 8 qemu-img, qemu-kvm, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, qemu-guest-agent, +8 more Red Hat Enterprise Linux 8 Advanced Virtualization qemu-img, qemu-kvm, qemu-kiwi, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, +9 more Red Hat OpenStack Platform 13 (Queens) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

  • n/a qemu
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenStack Platform 13 (Queens)
  • Fedora Fedora
  • Fedora Extra Packages for Enterprise Linux

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.