#OpenvSwitch
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euvd-bot.bsky.social
🚨 EUVD-2026-86742
📊 7.8/10
🏢 Linux

📝 In the Linux kernel, the following vulnerability has been resolved:

net: openvswitch: fix use-after-free of the flow table mask array

tbl_mask_array_reall...

🔗 https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-86742

#cybersecurity #infosec #cve #euvd
September 25, 2026 at 4:03 PM
benpfaff.bsky.social
I've now transferred this repository to the openvswitch organization, which is a more suitable home for it: github.com/openvswitch/...
GitHub - openvswitch/openflow: OpenFlow specification and reference implementation
OpenFlow specification and reference implementation - openvswitch/openflow
github.com
July 10, 2025 at 3:47 PM
ebiken.bsky.social
Tofino P4 Switch Pipeline 完全に理解した（５年ぶり２度目）。明日から本題の DOCA OpenVSwitch pipeline 改造を頑張る。
February 3, 2026 at 4:37 PM
ebiken.bsky.social
数年振りに Tofino P4 Switch Pipeline と OpenVSwitch Source Code を真面目に読んでる。昔は趣味と称して無給で勉強してた活動でお金もらえるのは幸せな環境だな。パケット処理技術を探求するには最高な職場。
February 2, 2026 at 10:27 AM
hugovalters.bsky.social
CVE-2026-80994 Linux kernel openvswitch use-after-free on flow deletion. No CVSS assigned, patch status unknown. If you run OVS, treat as urgent. https://www.valtersit.com/cve/CVE-2026-80994/ #CVE #Linux #infosec
September 20, 2026 at 1:30 PM
インフラの定義をまとめたプライベートリポジトリに残っていた思い出の残渣を消している。softehterとか、afpdとか、sambaとか、openVSwitchでdockerコンテナのネットワーク引っ張り回すとか、引っ越し前の家のルータの設定とか。
September 21, 2026 at 6:55 AM
benpfaff.bsky.social
People are still doing research on #openvswitch and this impresses me so much.
November 19, 2025 at 11:28 PM
shindo.bsky.social
Open vSwitch 3.2.1、3.1.3、3.0.5 及び 2.17.8 が出ました。user space conntrack、ovsdb-server、Python IDL になどに関連したいくつかの重要な問題に対する fix が入っています。#ovs #openvswitch
October 18, 2023 at 1:25 AM
lamp.bsky.social
What
failed to open connection: dial unix /run/openvswitch/db.sock: connect: no such file or directory
January 18, 2025 at 6:27 PM
cbo-rcm-le17.bsky.social
Et pour faire un réseau mesh à base de wireguard on peut utiliser wg-mesh qui permet de gérer son ensemble de machines et de générer toutes les configurations : github.com/k4yt3x/wg-me...
On peut ajouter openvswitch par dessus par exemple :)
GitHub - k4yt3x/wg-meshconf: WireGuard full mesh configuration generator.
WireGuard full mesh configuration generator. Contribute to k4yt3x/wg-meshconf development by creating an account on GitHub.
github.com
May 29, 2025 at 7:43 PM
cyberhub.blog
📌 Fragnesia primitive via Open vSwitch - Deterministic Local Privilege Escalation Vulnerability https://www.cyberhub.blog/article/32305-fragnesia-primitive-via-open-vswitch-deterministic-local-privilege-escalation-vulnerability
Fragnesia primitive via Open vSwitch - Deterministic Local Privilege Escalation Vulnerability
A deterministic local privilege escalation vulnerability has been reported affecting the default installations of the latest Arch, Fedora, Debian, Amazon Linux, and RHEL distributions. The vulnerability affects systems that have unprivileged user namespaces enabled, openvswitch auto-loading enabled, and a stock kernel carrying the Fragnesia fix.
www.cyberhub.blog
September 20, 2026 at 6:37 AM
cve-notifications.incredincomp.com
ID: CVE-2025-21681
CVSS N/A
In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix lockup on tx to unregistering netdev with carrier Commit in a fixes tag attempted to fix the issue in the following sequence of calls: ...
#security #infosec #cve-alert
nvd.nist.gov
January 31, 2025 at 12:16 PM
nukopal.bsky.social
メモリ512GB(?)マシンにProxmox入れて遊ぼうとしたらいろいろ詰まった。
多分暗号化なしだと素直に動く…と思いたいんだけど、ブート時のdmesg見てるとどうもそんなにはうまくいかなそうなのでUbuntuに戻して、そのうえで考えることにする。

OpenVSwitchの学習とかはしたいからnested VMするけど…1週間溶かしてしまった。
February 27, 2025 at 6:51 PM
infosec.skyfleet.blue
OVSwrap (CVE-2026-64531): Linux kernel/OVS local root vulnerability
OVSwrap (CVE-2026-64531): Linux kernel/OVS local root vulnerability
Posted by manizada on Jul 28 Hi folks, Emailing here now that the embargo agreed upon with linux-distros@ has expired. Flagging a local root vulnerability in the Linux kernel's Open vSwitch datapath (originally reported to security () kernel org and OVS maintainers on Jun 19). The fix is now public and has shipped in the relevant stable trees: 3f1f75536668 ("net: openvswitch: reject oversized nested action attrs") The first fixed upstream stable releases...
seclists.org
July 28, 2026 at 10:33 AM
hugovalters.bsky.social
CVE-2026-89488: use-after-free in Linux openvswitch CT limit teardown. Unprivileged user can trigger slab-UAF in ovs_ct_execute(). CVSS N/A, no patch yet. Update immediately. https://www.valtersit.com/cve/CVE-2026-89488/ #CVE #Linux #infosec
September 14, 2026 at 6:00 PM
nesk.bsky.social
はてなブログに投稿しました
Proxmoxにて、物理NIC交換を実施した際の注意点 - 戯言を嗤う https://nemesk.hatenablog.com/entry/2024/01/29/Proxmox%E3%81%AB%E3%81%A6%E3%80%81%E7%89%A9%E7%90%86NIC%E4%BA%A4%E6%8F%9B%E3%82%92%E5%AE%9F%E6%96%BD%E3%81%97%E3%81%9F%E9%9A%9B%E3%81%AE%E6%B3%A8%E6%84%8F%E7%82%B9
#はてなブログ
Proxmoxにて、物理NIC交換を実施した際の注意点 - 戯言を嗤う
ProxmoxではOpenVSwitchを使用することが出来る。 リポジトリから引っ張ってきて、インストールすることができ、機能を使うことが出来る。 例えば、後付けでNICを変更する時には電源を落として作業すると思うのだが、その場合、作業終了後にOVSが疎通出来なくなると言う症状が発生した。 対処方法としては再度OVSをインストールし直す、というのが方法にはなるのだが、基本的に入れ替えてもドライバー自体は変わらないだろうと思い込んでいたので正直びっくりしたところではある。 Proxmox自体、使い勝手もよいので今後VMwareのかわりになるか？というのがポイントにはなってくるとは思うが基本的に…
nemesk.hatenablog.com
January 29, 2024 at 2:54 PM
thedailytechfeed.com
OVSwrap vulnerability in Open vSwitch lets unprivileged users gain root access on Linux systems. Patch immediately to secure your systems. #OVSwrap #LinuxSecurity #OpenvSwitch #CVE202664531 thedailytechfeed.com/ovswrap-vuln...
August 5, 2026 at 1:02 PM
thecybersecguru.com
OVSwrap (CVE-2026-64531): How a 13-Year-Old Open vSwitch Bug Became a Reliable Linux Root Exploit

OVSwrap (CVE-2026-64531) is a Linux kernel privilege escalation flaw affecting Open vSwitch.…

https://thecybersecguru.com/news/ovswrap-cve-2026-64531-linux-kernel-openvswitch-root-vulnerability/
Post Image
August 5, 2026 at 3:44 PM
it4intserver.bsky.social
iT4iNT SERVER New OVSwrap Linux Kernel Flaw Lets Local Users Gain Root via Open vSwitch VDS VPS Cloud #Linux #KernelVulnerability #CVE202664531 #OpenvSwitch #CyberSecurity
New OVSwrap Linux Kernel Flaw Lets Local Users Gain Root via Open vSwitch
A memory corruption flaw in the Linux kernel's Open vSwitch datapath gives ordinary local users a path to root on a broad set of default-configured distributions, and a public exploit ships with pre-built records for roughly 800 kernel builds. The vulnerability, tracked as CVE-2026-64531 (CVSS score: 7.8) and codenamed OVSwrap by its discoverer, was disclosed by security researcher Asim
dlvr.it
August 5, 2026 at 2:37 PM
securityonline.bsky.social
The OVSwrap local root flaw hits the Linux kernel Open vSwitch datapath. CVE-2026-64531 now has a public patch and PoC. See affected distros and fixes.

#OVSwrap #CVE202664531 #LinuxKernel #OpenvSwitch #LocalRoot #PrivilegeEscalation
OVSwrap Local Root Vulnerability (CVE-2026-64531): Exploit Details and PoC Publicly Disclosed
TL;DR The OVSwrap local root flaw lets an unprivileged user gain root on many Linux systems. It affects the kernel's Open vSwitch datapath and carries the ID CVE-2026-64531. Researcher Asim Manizada published the full write-up and a public proof-of-concept on July 28, 2026. Why it matters Open vSwitch ships on most Linux distributions as a loadable module. As a result, the attack surface reaches far past dedicated network hosts.
securityonline.info
July 28, 2026 at 11:12 AM
euvd-bot.bsky.social
🚨 EUVD-2026-49109
📊 n/a
🏢 Linux

📝 In the Linux kernel, the following vulnerability has been resolved:

net: openvswitch: reject oversized nested action attrs

Open vSwitch stores generated flow...

🔗 https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-49109

#cybersecurity #infosec #cve #euvd
July 27, 2026 at 9:00 AM
golangoss.bsky.social
go-openvswitch (⭐️ 331)

Go packages which enable interacting with Open vSwitch and related tools. Apache 2.0 Licensed.

#go
July 5, 2026 at 6:24 PM
sonoble.bsky.social
“@mestery: My VXLAN patches went upstream into #openvswitch today, OVS now has VXLAN support! <a href="http://openvswitch.org/pipermail/git/2012-December/003400.html”" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">http://openvswitch.org/pipermail/git/2012-December/003400.html” Congrats!
Page not found · GitHub Pages
http://openvswitch.org/pipermail/git/2012-December/003400.html”
November 19, 2024 at 12:12 AM
sonoble.bsky.social
#openvswitch 2.4 is out <a href="http://openvswitch.org/releases/NEWS-2.4.0" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">http://openvswitch.org/releases/NEWS-2.4.0 nice feature additions including bash style cli completion #OSS
November 17, 2024 at 10:40 PM
quicktutoriel.bsky.social
Nouvel article sur le blog: Création d’une machine virtuelle sur un NAS Synology dans la catégorie Système
#machinevirtuelle #NASSynology #InstallerVMMsurSynology #OpenvSwitch
Création d’une machine virtuelle sur un NAS Synology - Quick-Tutoriel.com
Synology était par le passé limité à de petites machines virtuelles tournant sous Docker. Mais avec
quick-tutoriel.com
November 15, 2025 at 5:17 PM