vulnerability
Gentoo Linux: CVE-2021-3527: QEMU: Multiple Vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:N/I:N/A:P) | May 26, 2021 | Aug 16, 2022 | Aug 13, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
May 26, 2021
Added
Aug 16, 2022
Modified
Aug 13, 2025
Description
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.
Solution
gentoo-linux-upgrade-app-emulation-qemu
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