Important: Red Hat Security Advisory: openvswitch3.1 security update

An update for openvswitch3.1 is now available for Fast Datapath for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

UBUNTU-CVE-2025-22057

In the Linux kernel, the following vulnerability has been resolved: net: decrease cached dst counters in dstrelease Upstream fix ac888d58869b "net: do not delay dstentriesadd in dstrelease" moved decrementing the dst count from dstdestroy to dstrelease to avoid accessing already freed data in cas...

RHEL 7 : openvswitch (RHSA-2016:0523)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2016:0523 advisory. Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fixe...

PT-2025-18469

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved, specifically in the openvswitch component. The issue concerns the validation of nested key length in the set action, where it is no...

The vulnerability of the MAC Service Monitor component of the Open vSwitch software multi-level switch allows a attacker to trigger a service failure.

The vulnerability of the MAC Service Monitor component of the Open vSwitch software multi-level switch is related to uncontrolled resource consumption. Exploiting this vulnerability could allow a malicious actor to cause service interruptions...

The vulnerability of the Open vSwitch multi-level switch lies in the lack of a mechanism for verifying the source of the connection. This allows an attacker to trigger a service failure.

The vulnerability of the Open vSwitch multi-level switch lies in the lack of a mechanism for verifying the source of the connection. Exploiting this vulnerability allows an attacker to trigger a service failure using specially created BFD packets...

PT-2025-16697

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved, related to the handling of cached destination counters in the dst release function. When CONFIG DST CACHE is enabled and Open vSwit...

CVE-2025-21958

In the Linux kernel, the following vulnerability has been resolved: Revert "openvswitch: switch to per-action label counting in conntrack" Currently, ovsctsetlabels is only called for confirmed conntrack entries ct within ovsctcommit. However, if the conntrack entry does not have the labelsext...

CVE-2025-21958

Summary: CVE-2025-21958 concerns the Linux kernel where a revert of a Open vSwitch conntrack change causes a potential warning path in nf_ct_ext_add when a conntrack entry lacks the labels_ext extension. The code path in ovs_ct_get_conn_labels() may attempt to allocate labels_ext for a confirmed ...

CVE-2025-21958

In the Linux kernel, the following vulnerability has been resolved: Revert "openvswitch: switch to per-action label counting in conntrack" Currently, ovsctsetlabels is only called for confirmed conntrack entries ct within ovsctcommit. However, if the conntrack entry does not have the labelsext...

CVE-2023-52977

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow memory leak in ovsflowcmdnew Syzkaller reports a memory leak of newflow in ovsflowcmdnew as it is not freed when an allocation of a key fails. BUG: memory leak unreferenced object 0xffff888116668000 siz...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that originates from a memory leak caused by the net openvswitch component failing to release newflow when it fails to...

openvswitch: fix lockup on tx to unregistering netdev with carrier

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Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-7344-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7344-1 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use...

Linux Distros Unpatched Vulnerability : CVE-2021-3905

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A memory leak was found in Open vSwitch OVS during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memor...

Linux Distros Unpatched Vulnerability : CVE-2021-36980

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Open vSwitch aka openvswitch 2.11.0 through 2.15.0 has a use-after-free in decodeNXASTRAWENCAP called from ofpactdecode and ofpactsdecode during the decoding of...

Linux Distros Unpatched Vulnerability : CVE-2023-3966

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which may result in a denial of service and invalid memory...

Linux Distros Unpatched Vulnerability : CVE-2022-49086

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: openvswitch: fix leak of nested actions While parsing user-provided actions, openvswitch module may dynamically allocate memory and store pointers in the...

Linux Distros Unpatched Vulnerability : CVE-2023-5366

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a loc...

Linux Distros Unpatched Vulnerability : CVE-2024-1151

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A vulnerability was reported in the Open vSwitch sub-component in the Linux Kernel. The flaw occurs when a recursive operation of code push recursively calls in...