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TI-2020-15737 Aliases CVE-2020-25723GHSA-4mvg-7php-mg7f

Reachable assertion in QEMU

Priority LOW 16CWE-617Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Partial Red Hat: 8 fixed, 7 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-617.

Summary

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 user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.

Why it matters now

EPSS 0.00365 30th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 8 fixed, 7 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—QEMUqemu 5.2.0—No fix listedCNA
  • QEMU Vendor— Affected qemu 5.2.0 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*up to 5.1.1VulnerableQEMU
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions up to 5.1.1 Vulnerable ·QEMU
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

Red Hat 3 advisories

  • RHSA-2021:1762 Released 2021-05-18 · Red Hat rating Moderate
    virt:rhel and virt-devel:rhel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) SLOF-20191022-3.git899d9883.module+el8.3.0+6423+e4cb6418.src::virt-devel:rhel, hivex-1.3.18-20.module+el8.3.0+6423+e4cb6418.i686::virt-devel:rhel, hivex-devel-1.3.18-20.module+el8.3.0+6423+e4cb6418.i686::virt-devel:rhel +47
    • Red Hat Enterprise Linux AppStream (v. 8) SLOF-20191022-3.git899d9883.module+el8.3.0+6423+e4cb6418.noarch::virt:rhel, SLOF-20191022-3.git899d9883.module+el8.3.0+6423+e4cb6418.src::virt:rhel, hivex-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64::virt:rhel +47
  • RHSA-2021:0771 Released 2021-03-09 · Red Hat rating Low
    virt:rhel and virt-devel:rhel security update
    • Red Hat CodeReady Linux Builder EUS (v. 8.2) SLOF-20171214-6.gitfa98132.module+el8.1.0+4066+0f1aadab.src::virt-devel:rhel, hivex-1.3.15-7.module+el8.1.0+4066+0f1aadab.i686::virt-devel:rhel, hivex-devel-1.3.15-7.module+el8.1.0+4066+0f1aadab.i686::virt-devel:rhel +47
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) SLOF-20171214-6.gitfa98132.module+el8.1.0+4066+0f1aadab.noarch::virt:rhel, SLOF-20171214-6.gitfa98132.module+el8.1.0+4066+0f1aadab.src::virt:rhel, hivex-1.3.15-7.module+el8.1.0+4066+0f1aadab.aarch64::virt:rhel +47
  • RHSA-2021:0648 Released 2021-02-23 · Red Hat rating Low
    virt:8.2 and virt-devel:8.2 security update
    • Advanced Virtualization CodeReady Builder for RHEL 8.2.1 SLOF-20191022-3.git899d9883.module+el8.2.0+5449+efc036dd.src::virt-devel:8.2, hivex-1.3.18-20.module+el8.2.0+5588+63a201c3.i686::virt-devel:8.2, hivex-devel-1.3.18-20.module+el8.2.0+5588+63a201c3.i686::virt-devel:8.2 +47
    • Advanced Virtualization for RHEL 8.2.1 SLOF-20191022-3.git899d9883.module+el8.2.0+5449+efc036dd.noarch::virt:8.2, SLOF-20191022-3.git899d9883.module+el8.2.0+5449+efc036dd.src::virt:8.2, hivex-1.3.18-20.module+el8.2.0+5588+63a201c3.aarch64::virt:8.2 +47

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8 Advanced VirtualizationAffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat OpenStack Platform 10 (Newton)AffectedNo fix planned: Out of support scope
Red Hat OpenStack Platform 13 (Queens)AffectedNo fix planned: Out of support scope
Advanced Virtualization CodeReady Builder for RHEL 8.2.1Fixed RHSA-2021:0648
Advanced Virtualization CodeReady Builder for RHEL 8.3.1Fixed—
Advanced Virtualization for RHEL 8.2.1Fixed RHSA-2021:0648
Advanced Virtualization for RHEL 8.3.1Fixed—
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:1762
Red Hat CodeReady Linux Builder EUS (v. 8.2)Fixed RHSA-2021:0771
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:1762
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2021:0771
Not affected: 1 product
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-25723
  2. 2026-10-03 Alias added: GHSA-4mvg-7php-mg7f

References

Patch 2

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences