CVE-2021-3527
Fixed in a distro release EPSS <1%
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.
Products: qemu, redhat enterprise_linux, debian_linux
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | ivshmem-tools | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-audio-alsa | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-audio-oss | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-audio-pa | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-audio-sdl | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-block-curl | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-block-dmg | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-block-iscsi | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-block-nfs | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-block-rbd | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-block-ssh | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-common | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-guest-agent | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-img | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-kvm | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-kvm-core | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-system-aarch64 | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-system-aarch64-core | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-system-x86 | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-system-x86-core | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-ui-curses | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-ui-gtk | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-ui-sdl | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-user | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-user-binfmt | 10:3.1.0-8.amzn2.0.10 |
| Amazon Linux 2 | qemu-user-static | 10:3.1.0-8.amzn2.0.10 |
| Debian 10 | qemu | 1:3.1+dfsg-8+deb10u9 |
| Debian 12 | qemu | 1:5.2+dfsg-11 |
| Debian 13 | qemu | 1:5.2+dfsg-11 |
| Debian 14 | qemu | 1:5.2+dfsg-11 |
| Debian 9 | qemu | 1:2.8+dfsg-6+deb9u15 |
| SUSE Enterprise Storage 6 | qemu | 3.1.1.1-80.40.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | qemu | 3.1.1.1-80.40.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | qemu | 3.1.1.1-80.40.1 |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | qemu | 2.11.2-70.59.1 |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | qemu | 2.11.2-70.59.1 |
| SUSE Linux Enterprise Micro 5.0 | qemu | 4.2.1-11.28.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | qemu | 4.2.1-11.28.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | qemu | 5.2.0-103.2 |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | qemu | 4.2.1-11.28.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | qemu | 5.2.0-103.2 |
| SUSE Linux Enterprise Server 11 SP4-LTSS | xen | 4.4.4_50-61.67.1 |
| SUSE Linux Enterprise Server 12 SP2-BCL | qemu | 2.6.2-41.73.1 |
| SUSE Linux Enterprise Server 12 SP4-LTSS | qemu | 2.11.2-5.40.2 |
| SUSE Linux Enterprise Server 12 SP5 | qemu | 3.1.1.1-57.2 |
| SUSE Linux Enterprise Server 15 SP1-BCL | qemu | 3.1.1.1-80.40.1 |
| SUSE Linux Enterprise Server 15 SP1-LTSS | qemu | 3.1.1.1-80.40.1 |
| SUSE Linux Enterprise Server 15-LTSS | qemu | 2.11.2-70.59.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | qemu | 2.11.2-5.40.2 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | qemu | 3.1.1.1-57.2 |
| SUSE Linux Enterprise Server for SAP Applications 15 | qemu | 2.11.2-70.59.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | qemu | 3.1.1.1-80.40.1 |
| SUSE OpenStack Cloud 9 | qemu | 2.11.2-5.40.2 |
| SUSE OpenStack Cloud Crowbar 9 | qemu | 2.11.2-5.40.2 |
| Ubuntu 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.37 |
| Ubuntu 20.04 LTS | qemu | 1:4.2-3ubuntu6.17 |
| Ubuntu 22.04 LTS | qemu | 1:6.0+dfsg-2expubuntu1 |
| Ubuntu Pro 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.47+esm6 |
| Ubuntu Pro 16.04 LTS | qemu | 1:2.5+dfsg-5ubuntu10.51+esm4 |
| Ubuntu Pro 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.42+esm5 |
| Ubuntu Pro 20.04 LTS | qemu | 1:4.2-3ubuntu6.30+esm1 |
| openSUSE Leap 15.2 | qemu | 4.2.1-lp152.9.20.1 |
| openSUSE Leap 15.2 | qemu-linux-user | 4.2.1-lp152.9.20.1 |
| openSUSE Leap 15.2 | qemu-testsuite | 4.2.1-lp152.9.20.1 |
| openSUSE Leap 15.3 | qemu | 5.2.0-103.2 |
| openSUSE Leap 15.3 | qemu | 3.1.1.1-80.40.1 |
| openSUSE Leap 15.3 | qemu | 4.2.1-11.28.1 |
| openSUSE Tumbleweed | qemu | 6.1.0-32.1 |