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CVE-2022-0216

Published: 26 August 2022

A use-after-free vulnerability was found in the LSI53C895A SCSI Host Bus Adapter emulation of QEMU. The flaw occurs while processing repeated messages to cancel the current SCSI request via the lsi_do_msgout function. This flaw allows a malicious privileged user within the guest to crash the QEMU process on the host, resulting in a denial of service.

Priority

Low

Cvss 3 Severity Score

4.4

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
bionic
Released (1:2.11+dfsg-1ubuntu7.41)
focal
Released (1:4.2-3ubuntu6.24)
impish Ignored
(end of life)
kinetic
Released (1:7.0+dfsg-7ubuntu2.1)
trusty
Released (2.0.0+dfsg-2ubuntu1.47+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (1:2.5+dfsg-5ubuntu10.51+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
jammy
Released (1:6.2+dfsg-2ubuntu6.6)
Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=6c8fa961da5e60f574bb52fd3ad44b1e9e8ad4b8
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=4367a20cc442c56b05611b4224de9a61908f9eac

Severity score breakdown

Parameter Value
Base score 4.4
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H