Description
Buffer overflow in lib/flow.c in ovs-vswitchd in Open vSwitch 2.2.x and 2.3.x before 2.3.3 and 2.4.x before 2.4.1 allows remote attackers to execute arbitrary code via crafted MPLS packets, as demonstrated by a long string in an ovs-appctl command.
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 | 2.3.0+git20140819-4 | — |
| Debian 13 | openvswitch | 2.3.0+git20140819-4 | — |
| Debian 12 | openvswitch | 2.3.0+git20140819-4 | — |
| Debian 8 | openvswitch | 2.3.0+git20140819-3+deb8u1 | DSA-3533-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 7 | openvswitch +1 | 2.4.0-2.el7_2 | RHSA-2016:0537 |
| Red Hat OpenStack 7 | openvswitch-dpdk | 2.4.0-0.10346.git97bab959.3.el7_2 | RHSA-2016:0537 |
| Red Hat OpenStack 6 | openvswitch +1 | 2.4.0-2.el7_2 | RHSA-2016:0524 |
| Red Hat OpenStack 5 | openvswitch +1 | 2.4.0-2.el7_2 | RHSA-2016:0523 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenShift 3 | openvswitch +3 | 2.4.0-2.el7_2 | RHSA-2016:0615 |
Advisories 5
- RHSA-2016:0615 Red Hat Security Advisory: openvswitch security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:0537 Red Hat Security Advisory: openvswitch security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:0523 Red Hat Security Advisory: openvswitch security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:0524 Red Hat Security Advisory: openvswitch security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-3533-1 openvswitch - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- [ovs-announce] 20160328 CVE-2016-2074: MPLS buffer overflow vulnerabilities in Open vSwitch mailing-list
- RHSA-2016:0537 vendor-advisory
- RHSA-2016:0524 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1318553
- DSA-3533 vendor-advisory
- RHSA-2016:0615 vendor-advisory
- https://security-tracker.debian.org/tracker/CVE-2016-2074
- GLSA-201701-07 vendor-advisory
- https://support.citrix.com/article/CTX232655
- RHSA-2016:0523 vendor-advisory
- [ovs-announce] 20160328 Open vSwitch 2.4.1 and 2.3.3 Available mailing-list
- 85700 vdb-entry