PT-2021-5462 · Qemu+5 · Qemu+5

Mauro Matteo Cascella · Published 2021-05-10 · Updated 2024-06-15 · CVE-2021-3546

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions QEMU versions up to and including 6.0

Description The issue is related to an out-of-bounds write vulnerability in the virtio vhost-user GPU device of QEMU. This vulnerability occurs while processing the VIRTIO GPU CMD GET CAPSET command from the guest. It could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute code with the privileges of the QEMU process.

Recommendations For QEMU versions up to and including 6.0, update to a version that includes the fix for this issue to prevent potential code execution or denial of service. As a temporary workaround, consider restricting access to the VIRTIO GPU CMD GET CAPSET command to minimize the risk of exploitation.

Fix

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2021-2713

ALT-PU-2021-3078

ALT-PU-2021-3363

BDU:2021-06308

CVE-2021-3546

DSA-4980-1

OESA-2021-1227

OPENSUSE-SU-2021:1043-1

OPENSUSE-SU-2021:2213-1

OPENSUSE-SU-2021_1043-1

OPENSUSE-SU-2021_2213-1

OPENSUSE-SU-2024:11287-1

SUSE-SU-2021:2212-1

SUSE-SU-2021:2213-1

USN-5010-1

USN-5307-1

Affected Products

Alt Linux

Astra Linux

Linuxmint

Qemu

Suse

Ubuntu

References · 230

• https://ubuntu.com/security/CVE-2021-3527 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-3546 · Security Note
• https://ubuntu.com/security/CVE-2021-3392 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3682 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-35505 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-0358 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-06308 · Security Note
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20211126SE16 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2021-9568.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5010-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3594 · Vendor Advisory
• https://debian.org/security/2021/dsa-4980 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-3546 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2213-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-3546 · Vendor Advisory