CVE-2026-34956

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...

CVE-2026-34956: Buffer Copy without Checking Size of Input

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...

vSwitch security vulnerability

Open vSwitch is a virtual switch developed as part of the Collaborative Project. There is a security vulnerability in Open vSwitch. This vulnerability arises when configuring conntrack streams that use FTP auxiliary programs. A remote attacker can send a specially crafted FTP stream, resulting in...

RHCOS 3 : openvswitch (RHSA-2016:0615)

The remote Red Hat Enterprise Linux CoreOS 3 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2016:0615 advisory. - openvswitch: MPLS buffer overflow vulnerability CVE-2016-2074 Note that Nessus has not tested for this issue but has instead relied only on...

CVE-2026-31678

A flaw was found in the Linux kernel's Open vSwitch OVS component. A race condition can occur during the destruction of a network device netdev tunnel, where the ovsnetdevtunneldestroy function may attempt to release a device reference while other parts of the system are still actively using it...

openvswitch: defer tunnel netdev_put to RCU release

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OESA-2026-2063 openvswitch security update

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fixes: "Description\n===========\n\nMultiple versions of Open vSwitch are vulnerable to crafted FTP payloads\ncausing invalid memory accesses, potential...

AZL-84216 CVE-2026-31678 affecting package kernel for versions less than 6.6.134.1-2

In the Linux kernel, the following vulnerability has been resolved: openvswitch: defer tunnel netdevput to RCU release ovsnetdevtunneldestroy may run after NETDEVUNREGISTER already detached the device. Dropping the netdev reference in destroy can race with concurrent readers that still observe...

CVE-2026-31679

In the Linux kernel, the following vulnerability has been resolved: openvswitch: validate MPLS set/setmasked payload length validateset accepted OVSKEYATTRMPLS as variable-sized payload for SET/SETMASKED actions. In action handling, OVS expects fixed-size MPLS key data struct ovskeympls. Use the...

CVE-2026-31678

In the Linux kernel, the following vulnerability has been resolved: openvswitch: defer tunnel netdevput to RCU release ovsnetdevtunneldestroy may run after NETDEVUNREGISTER already detached the device. Dropping the netdev reference in destroy can race with concurrent readers that still observe...

Linux Kernel Security Vulnerabilities

The Linux kernel is the kernel used by the Linux operating system developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the lack of validation of the payload length during MPLS settings in openvswitch, potentially allowing...

SUSE CVE-2026-31508

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Avoid releasing netdev before teardown completes The patch cited in the Fixes tag below changed the teardown code for OVS ports to no longer unconditionally take the RTNL. After this change, the netdevdestroy...

Linux Kernel Security Vulnerabilities

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from OpenVSwitch releasing network devices before they are properly detached, potentially leading to...

Security update for openvswitch

This update for openvswitch fixes the following issue: Security updates: CVE-2026-34956: Invalid memory access in conntrack FTP alg bsc1261273. Other updates: Update openvswitch to 3.5.4 Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST...

OESA-2026-1961 openvswitch security update

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fixes: "Description\n===========\n\nMultiple versions of Open vSwitch are vulnerable to crafted FTP payloads\ncausing invalid memory accesses, potential...

OESA-2026-1962 openvswitch security update

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fixes: "Description\n===========\n\nMultiple versions of Open vSwitch are vulnerable to crafted FTP payloads\ncausing invalid memory accesses, potential...

OESA-2026-1872 openvswitch security update

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fixes: "Description\n===========\n\nMultiple versions of Open vSwitch are vulnerable to crafted FTP payloads\ncausing invalid memory accesses, potential...

OESA-2026-1871 openvswitch security update

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fixes: "Description\n===========\n\nMultiple versions of Open vSwitch are vulnerable to crafted FTP payloads\ncausing invalid memory accesses, potential...

PT-2026-29690

Name of the Vulnerable Software and Affected Versions Open vSwitch affected versions not specified Description An issue exists in Open vSwitch related to invalid memory access within the conntrack FTP algorithm. Specifically, crafted FTP payloads can trigger invalid memory accesses, potentially...

Security update for openvswitch

This update for openvswitch fixes the following issues: CVE-2024-2182: Fixed insufficient validation of incoming BFD packets may lead to denial of service bsc1255435 Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper...