Description
Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| QEMU | QEMU | before 2.4.0 | — |
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 | 1:2.4+dfsg-1a | — |
| Debian 13 | qemu | 1:2.4+dfsg-1a | — |
| Debian 12 | qemu | 1:2.4+dfsg-1a | — |
| Debian 8 | qemu | 1:2.1+dfsg-12+deb8u2 | DSA-3348-1 |
| Debian 7 | qemu-kvm | 1.1.2+dfsg-6+deb7u9 | DSA-3349-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.17 | USN-2724-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | qemu | 2.3.1-14.1 | SUSE-SU-2016:1703-1 |
| SLES 12 | qemu | 2.0.2-48.19.1 | SUSE-SU-2016:1560-1 |
| SLES 11 SP4 | kvm | 1.4.2-44.1 | SUSE-SU-2016:1785-1 |
| SLES 11 SP3 | kvm | 1.4.2-46.1 | SUSE-SU-2016:1698-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | qemu | 2.3.1-14.1 | SUSE-SU-2016:1703-1 |
| SLES for SAP 12 | qemu | 2.0.2-48.19.1 | SUSE-SU-2016:1560-1 |
| SLES for SAP 11 SP4 | kvm | 1.4.2-44.1 | SUSE-SU-2016:1785-1 |
Advisories 7
- DSA-3348-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3349-1 qemu-kvm - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2724-1 qemu, qemu-kvm vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2016:1703-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1785-1 Security update for kvm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1560-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1698-1 Security update for kvm SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168671.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168077.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168646.html
- https://lists.gnu.org/archive/html/qemu-devel/2015-07/msg05458.html
- http://www.openwall.com/lists/oss-security/2015/08/06/3
- http://www.openwall.com/lists/oss-security/2015/08/06/5
- https://github.com/qemu/qemu/commit/7882080388be5088e72c425b02223c02e6cb4295
- https://www.arista.com/en/support/advisories-notices/security-advisories/1180-security-advisory-13