A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single large transfer request to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack resulting in a denial of service.
| Reporter | Title | Published | Views | Family All 145 |
|---|---|---|---|---|
 | CVE-2021-3527 | 26 May 202122:15 | – | attackerkb |
 | Amazon Linux 2 : qemu (ALAS-2023-2061) | 5 Jun 202300:00 | – | nessus |
| Debian DLA-2753-1 : qemu - LTS security update | 3 Sep 202100:00 | – | nessus |
| Debian dla-3099 : qemu - security update | 5 Sep 202200:00 | – | nessus |
| EulerOS Virtualization 2.9.1 : qemu (EulerOS-SA-2021-2192) | 13 Jul 202100:00 | – | nessus |
| EulerOS Virtualization 2.9.0 : qemu (EulerOS-SA-2021-2211) | 13 Jul 202100:00 | – | nessus |
| EulerOS Virtualization 3.0.2.0 : qemu (EulerOS-SA-2021-2844) | 29 Dec 202100:00 | – | nessus |
| EulerOS 2.0 SP9 : qemu (EulerOS-SA-2022-1014) | 28 Jan 202200:00 | – | nessus |
| EulerOS 2.0 SP9 : qemu (EulerOS-SA-2022-1034) | 28 Jan 202200:00 | – | nessus |
| EulerOS Virtualization 3.0.2.6 : qemu-kvm (EulerOS-SA-2023-1051) | 6 Jan 202300:00 | – | nessus |
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04 Jun 2021 07:00Current
7High risk
Vulners AI Score7
CVSS 22.1
CVSS 3.15.5
EPSS0.00374