CVE-2021-3582

Publication date 18 June 2021

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Description

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

Package Ubuntu Release Status
qemu 22.04 LTS jammy
Fixed in 1:6.0+dfsg-2expubuntu1
21.10 impish
Fixed in 1:6.0+dfsg-2expubuntu1
21.04 hirsute
Fixed in 1:5.2+dfsg-9ubuntu3.1
20.10 groovy
Fixed in 1:5.0-5ubuntu9.9
20.04 LTS focal
Fixed in 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

Severity score breakdown

CVSS version: CVSS v3.0

Base score 6.5 · Medium

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)

Other references

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