Not rated
CVE-2021-3527 A flaw was found in the USB redirector device (usb-redir) of QEMU
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| QEMU | Versions not published |
References
- bugzilla.redhat.com bugzilla.redhat.com
- www.openwall.com www.openwall.com
- gitlab.com gitlab.com
- gitlab.com gitlab.com
- security.netapp.com security.netapp.com
- [debian-lts-announce] 20210902 [SECURITY] [DLA 2753-1] qemu security update lists.debian.org
- GLSA-202208-27 security.gentoo.org
- [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update lists.debian.org
Timeline
- Published
- Last modified
Other CVEs of QEMU
The 60 CVEs of QEMU →
CVE-2023-2680
This CVE exists because of an incomplete fix for CVE-2021-3750
7.5
High
CVE-2023-3301
A flaw was found in QEMU
5.6
Medium
CVE-2023-3180
A flaw was found in the QEMU virtual crypto device while handling data encryption/decryption requests in…
6.0
Medium
CVE-2023-1386
A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU
3.3
Low