CVE-2020-25723

 

Published at: - 02-12-2020 02:15

Last modified: - 05-09-2022 08:15

Total changes: - 2

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 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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

 

Verification logic

 

Reference

• https://bugzilla.redhat.com/show_bug.cgi?id=1898579
• https://security.netapp.com/advisory/ntap-20201218-0004/
• [oss-security] 20201222 CVE-2020-25723 QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c-Mailing List, Patch, Third Party Advisory
• [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update-

 

Keywords

NVD

 

CVE-2020-25723

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures