CVE-2023-1998 Spectre v2 SMT mitigations problem in Linux kernel

The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to...

OESA-2023-1234 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: A flaw was found in openvswitch OVS. When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifyin...

Linux Kernel 安全漏洞

Linux kernel is the kernel used by the Linux Foundation's open source operating system Linux. A security vulnerability exists in Linux Kernel version 6.2, which stems from a common IBRS being enabled that makes userspace processes vulnerable...

CVE-2023-2194

An out-of-bounds write vulnerability was found in the Linux kernel's SLIMpro I2C device driver. The userspace "data-block0" variable was not capped to a number between 0-255 and was used as the size of a memcpy, possibly writing beyond the end of dmabuffer. This flaw could allow a local privilege...

Linux Kernel 6.2 - Userspace Processes To Enable Mitigation

Exploit Title: Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit Author: nu11secur1ty CVE ID: CVE-2023-1998 Description Summary The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as...

CVE-2023-2194

An out-of-bounds write vulnerability was found in the Linux kernel's SLIMpro I2C device driver. The userspace "data-block0" variable was not capped to a number between 0-255 and was used as the size of a memcpy, possibly writing beyond the end of dmabuffer. This flaw could allow a local privilege...

Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit

Exploit Title: Linux Kernel 6.2 - Userspace Processes To Enable Mitigation Exploit Author: nu11secur1ty CVE ID: CVE-2023-1998 Description Summary The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL which disables the speculation feature as...

CVE-2023-2194

An out-of-bounds write vulnerability was found in the Linux kernel's SLIMpro I2C device driver. The userspace "data-block0" variable was not capped to a number between 0-255 and was used as the size of a memcpy, possibly writing beyond the end of dmabuffer. This flaw could allow a local privilege...

openvswitch: ip proto 0 triggers incorrect handling

A flaw was found in openvswitch OVS. When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results for both kernel and userspace datapath in installing a datapath flow matching all IP protocols nwproto is wildcarded...

openvswitch: ip proto 0 triggers incorrect handling

A flaw was found in openvswitch OVS. When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results for both kernel and userspace datapath in installing a datapath flow matching all IP protocols nwproto is wildcarded...

openvswitch: ip proto 0 triggers incorrect handling

A flaw was found in openvswitch OVS. When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results for both kernel and userspace datapath in installing a datapath flow matching all IP protocols nwproto is wildcarded...

openvswitch: ip proto 0 triggers incorrect handling

A flaw was found in openvswitch OVS. When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results for both kernel and userspace datapath in installing a datapath flow matching all IP protocols nwproto is wildcarded...

RHEL 9 : openvswitch3.1 (RHSA-2023:1770)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:1770 advisory. Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fixe...

RHEL 8 : openvswitch3.1 (RHSA-2023:1766)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:1766 advisory. Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fixe...

A flaw was found in openvswitch (OVS). When processing an IP packet with protocol 0 OVS will install the datapath flow without the action modifying the IP header. This issue results (for both kernel and userspace datapath) in installing a datapath flow matching all IP protocols (nw_proto is wildcarded) for this flow but with an incorrect action possibly causing incorrect handling of other IP packets with a != 0 IP protocol that matches this dp flow.

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DEBIAN-CVE-2023-1668

A flaw was found in openvswitch OVS. When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results for both kernel and userspace datapath in installing a datapath flow matching all IP protocols nwproto is wildcarded...

AZL-35088 CVE-2023-1668 affecting package openvswitch for versions less than 2.17.5-3

A flaw was found in openvswitch OVS. When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results for both kernel and userspace datapath in installing a datapath flow matching all IP protocols nwproto is wildcarded...

AZL-26031 CVE-2023-1668 affecting package openvswitch for versions less than 2.17.5-2

A flaw was found in openvswitch OVS. When processing an IP packet with protocol 0, OVS will install the datapath flow without the action modifying the IP header. This issue results for both kernel and userspace datapath in installing a datapath flow matching all IP protocols nwproto is wildcarded...

Debian: Security Advisory (DSA-1989-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Debian: Security Advisory (DLA-238-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...