DEBIAN-CVE-2021-3527
- Source
- https://security-tracker.debian.org/tracker/CVE-2021-3527
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3527.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-3527
- Upstream
- Published
- 2021-05-26T22:15:08Z
- Modified
- 2025-09-25T22:40:24Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:11 / qemu
Package
- Name
- qemu
- Purl
- pkg:deb/debian/qemu?arch=source
Debian:12 / qemu
Package
- Name
- qemu
- Purl
- pkg:deb/debian/qemu?arch=source
Debian:13 / qemu
Package
- Name
- qemu
- Purl
- pkg:deb/debian/qemu?arch=source
Debian:14 / qemu
Package
- Name
- qemu
- Purl
- pkg:deb/debian/qemu?arch=source