🛡️ CVE-2021-3608 on Debian — qemu

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.

Distribution advisory

This page covers CVE-2021-3608 as tracked by Debian, for the package qemu. The fix is available in version 1:5.2+dfsg-11; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality none, integrity none, availability high.

Affected software

DEBIAN-CVE-2021-3608 is recorded against 1 package.

qemu (fixed in 1:5.2+dfsg-11)

Timeline and source

Published on 24 February 2022 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2021-3608 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Ubuntu

Details

Severity Unknown

CVSS Score N/A

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

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2022-02-24

Updated 2026-08-20

Modified 2026-08-04

Fix URL N/A

Affected Packages

Software	From version	Fixed in
qemu	—	1:5.2+dfsg-11

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2021-3608

🔗 NVD 🔗 Mitre

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