Description
QEMU (aka Quick Emulator), when built with the IDE disk and CD/DVD-ROM Emulator support, allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qemu | 1:2.10.0-1 | — |
| Debian 13 | qemu | 1:2.10.0-1 | — |
| Debian 12 | qemu | 1:2.10.0-1 | — |
| Debian 9 | qemu | 1:2.8+dfsg-6+deb9u3 | DSA-3991-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | qemu | 1:2.5+dfsg-5ubuntu10.15 | USN-3414-1 |
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.35 | USN-3414-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | qemu | 2.9.1-6.6.3 | SUSE-SU-2017:2924-1 |
| SLES 12 SP2 | qemu | 2.6.2-41.22.2 | SUSE-SU-2017:2936-1 |
| SLES 12 SP1 | qemu | 2.3.1-33.3.3 | SUSE-SU-2017:2946-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | qemu | 2.9.1-6.6.3 | SUSE-SU-2017:2924-1 |
| SLES for SAP 12 SP2 | qemu | 2.6.2-41.22.2 | SUSE-SU-2017:2936-1 |
| SLES for SAP 12 SP1 | qemu | 2.3.1-33.3.3 | SUSE-SU-2017:2946-1 |
| SUSE OpenStack Cloud 6 | qemu | 2.3.1-33.3.3 | SUSE-SU-2017:2946-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | qemu +12 | 15:3.0.0-1.el7 | ELSA-2019-4585, ELSA-2018-4289, ELSA-2018-4285 |
Advisories 9
- DSA-3991-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3414-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:2924-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2936-1 Security update for qemu SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2017:2946-1 Security update for qemu SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-2018 QEMU: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 2, 2024
- ELSA-2019-4585 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 15, 2019
- ELSA-2018-4289 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 28, 2018
- ELSA-2018-4285 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 20, 2018
References
- DSA-3991 vendor-advisory
- [qemu-devel] 20170809 [Qemu-devel] [PATCH 1/2] IDE: Do not flush empty CDROM drives mailing-list
- 100451 vdb-entry
- [oss-security] 20170821 CVE-2017-12809 Qemu: ide: flushing of empty CDROM drives leads to NULL dereference mailing-list