Description
In lib/ofp-util.c in Open vSwitch (OvS) before 2.8.1, there are multiple memory leaks while parsing malformed OpenFlow group mod messages. NOTE: the vendor disputes the relevance of this report, stating "it can only be triggered by an OpenFlow controller, but OpenFlow controllers have much more direct and powerful ways to force Open vSwitch to allocate memory, such as by inserting flows into the flow table."
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 | openvswitch | 2.8.1+dfsg1-2 | — |
| Debian 13 | openvswitch | 2.8.1+dfsg1-2 | — |
| Debian 12 | openvswitch | 2.8.1+dfsg1-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | openvswitch | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | openvswitch | 2.7.0-3.10.1 | SUSE-SU-2017:3232-1 |
| SLES 12 SP2 | openvswitch | 2.5.1-25.12.7 | SUSE-SU-2018:0311-1 |
| SLES 12 SP2 | openvswitch-dpdk | 2.5.1-25.12.8 | SUSE-SU-2018:0311-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | openvswitch | 2.7.0-3.10.1 | SUSE-SU-2017:3232-1 |
| SLES for SAP 12 SP2 | openvswitch | 2.5.1-25.12.7 | SUSE-SU-2018:0311-1 |
| SLES for SAP 12 SP2 | openvswitch-dpdk | 2.5.1-25.12.8 | SUSE-SU-2018:0311-1 |
| SUSE OpenStack Cloud 6 | openvswitch | 2.5.1-6.4.7 | SUSE-SU-2018:0505-1 |
Advisories 3
- SUSE-SU-2017:3232-1 Security update for openvswitch SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0311-1 Security update for openvswitch SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0505-1 Security update for openvswitch SUSE / openSUSE Security Updates · Feb 4, 2026