Description
In ovs versions v0.90.0 through v2.5.0 are vulnerable to heap buffer over-read in flow.c. An unsafe comparison of “minimasks” function could lead access to an unmapped region of memory. This vulnerability is capable of crashing the software, memory modification, and possible remote execution.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ovs | ovs | v0.90.0 – < unspecified, unspecified – ≤ v2.5.0 | unspecified |
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 | 2.13.0+dfsg1-1 | — |
| Debian 13 | openvswitch | 2.13.0+dfsg1-1 | — |
| Debian 12 | openvswitch | 2.13.0+dfsg1-1 | — |
| Debian 10 | openvswitch | 2.10.7+ds1-0+deb10u2 | DLA-3168-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | openvswitch | 2.9.8-0ubuntu0.18.04.3 | USN-5698-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | openvswitch | 2.5.9-0ubuntu0.16.04.3+esm1 | USN-5698-2 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | dpdk | 18.11.9-150100.4.23.1 | SUSE-SU-2023:1795-1 |
| SLES 15 SP4 | openvswitch | 2.11.5-150100.3.18.2 | SUSE-SU-2023:1795-1 |
| SLES 12 SP5 | openvswitch | 2.11.5-3.12.1 | SUSE-SU-2022:4050-1 |
| SLES 12 SP4 | openvswitch | 2.8.10-4.33.1 | SUSE-SU-2023:2360-1 |
| SLES 12 SP2 | openvswitch +1 | 2.5.11-25.34.1 | SUSE-SU-2023:2259-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | openvswitch | 2.11.5-3.12.1 | SUSE-SU-2022:4050-1 |
| SLES for SAP 12 SP4 | openvswitch | 2.8.10-4.33.1 | SUSE-SU-2023:2360-1 |
| SUSE OpenStack Cloud Crowbar 9 | openvswitch | 2.8.10-4.33.1 | SUSE-SU-2023:2360-1 |
| SUSE OpenStack Cloud 9 | openvswitch | 2.8.10-4.33.1 | SUSE-SU-2023:2360-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | dpdk | 18.11.9-150100.4.23.1 | SUSE-SU-2023:1795-1 |
| openSUSE Leap 15.4 | openvswitch | 2.11.5-150100.3.18.2 | SUSE-SU-2023:1795-1 |
Advisories 7
- USN-5698-2 openvswitch vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-3168-1 openvswitch - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-5698-1 openvswitch vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2023:2259-1 Security update for openvswitch SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4050-1 Security update for openvswitch SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2360-1 Security update for openvswitch SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1795-1 Security update for openvswitch SUSE / openSUSE Security Updates · Feb 4, 2026