CVE-2021-3582

Publication date 18 June 2021

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR" command due to improper memory remapping (mremap). This flaw allows a malicious guest to crash the QEMU process on the host. The highest threat from this vulnerability is to system availability.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	22.04 LTS jammy	Fixed 1:6.0+dfsg-2expubuntu1
	21.10 impish	Fixed 1:6.0+dfsg-2expubuntu1
	21.04 hirsute	Fixed 1:5.2+dfsg-9ubuntu3.1
	20.10 groovy	Fixed 1:5.0-5ubuntu9.9
	20.04 LTS focal	Fixed 1:4.2-3ubuntu6.17
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
qemu	Upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=284f191b4abad213aed04cb0458e1600fd18d7c4

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-5010-1
QEMU vulnerabilities
15 July 2021