Description
hw/virtio/virtio.c in the Virtual Network Device (virtio-net) support in QEMU, when big or mergeable receive buffers are not supported, allows remote attackers to cause a denial of service (guest network consumption) via a flood of jumbo frames on the (1) tuntap or (2) macvtap interface.
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-4 | — |
| Debian 13 | qemu | 1:2.4+dfsg-4 | — |
| Debian 12 | qemu | 1:2.4+dfsg-4 | — |
| Debian 8 | qemu | 1:2.1+dfsg-12+deb8u5a | DSA-3471-1 |
| Debian 7 | qemu | 1.1.2+dfsg-6a+deb7u12 | DSA-3469-1 |
| Debian 7 | qemu-kvm | 1.1.2+dfsg-6+deb7u12 | DSA-3470-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.21 | USN-2828-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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-3471-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3469-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3470-1 qemu-kvm - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2828-1 qemu, qemu-kvm vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 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
- [oss-security] 20150918 Re: CVE request Qemu: net: virtio-net possible remote DoS mailing-list
- 82672 vdb-entry
- [oss-security] 20150918 CVE request Qemu: net: virtio-net possible remote DoS mailing-list
- FEDORA-2015-d8510319c0 vendor-advisory
- FEDORA-2015-d5c1048b47 vendor-advisory
- DSA-3469 vendor-advisory
- DSA-3470 vendor-advisory
- FEDORA-2015-fca1900745 vendor-advisory
- DSA-3471 vendor-advisory
- GLSA-201602-01 vendor-advisory