Medium severity5.9NVD Advisory· Published May 5, 2026· Updated May 5, 2026
CVE-2026-34956
CVE-2026-34956
Description
A flaw was found in Open vSwitch. When Open vSwitch is configured with a conntrack flow using FTP helpers over the userspace datapath, a remote attacker can send a specially crafted FTP stream with an EPASV command exceeding 255 characters. This heap access error can lead to a crash, resulting in a Denial of Service (DoS) for the affected system.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
12- osv-coords11 versionspkg:rpm/opensuse/openvswitch&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/openvswitch&distro=openSUSE%20Tumbleweedpkg:rpm/suse/openvswitch3&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/openvswitch&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/openvswitch&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7pkg:rpm/suse/openvswitch&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/openvswitch&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/openvswitch&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/openvswitch&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/openvswitch&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/openvswitch&distro=SUSE%20Linux%20Micro%206.2
< 3.5.4-160000.4.1+ 10 more
- (no CPE)range: < 3.5.4-160000.4.1
- (no CPE)range: < 3.7.1-33.1
- (no CPE)range: < 3.1.7-150500.3.28.1
- (no CPE)range: < 3.5.4-150700.41.15.1
- (no CPE)range: < 3.5.4-150700.41.15.1
- (no CPE)range: < 3.5.4-160000.4.1
- (no CPE)range: < 3.5.4-160000.4.1
- (no CPE)range: < 2.11.5-3.30.1
- (no CPE)range: < 3.1.7-5.1
- (no CPE)range: < 3.1.7-slfo.1.1_3.1
- (no CPE)range: < 3.5.4-160000.4.1
Patches
Vulnerability mechanics
References
3News mentions
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