pipe-primitive

pipe-primitive An exploit primitive in linux kernel inspired by DirtyPipe CVE-2022-0847. A while ago, like many security veterans, I studied and reproduced the DirtyPipe CVE-2022-0847 vulnerability, and deeply felt how useful this bug is. It starts from an uninitialized memory issue and ends with...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098850)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098850 advisory. In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix unsafe attribute parsing in outputuserspace This patch replaces the manual Netli...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098998)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098998 advisory. In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix middle attribute validation in pushnsh action The pushnsh action structure...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.22.11 bug fix and security update

Red Hat OpenShift Container Platform release 4.22.11 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.22. Red Hat Product Security has rated this update as having a...

RHEL 9 : kpatch-patch-5_14_0-687_10_1 (RHSA-2026:59149)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:59149 advisory. This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This patc...

RHEL 10 : kpatch-patch-6_12_0-211_16_1 (RHSA-2026:59143)

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:59143 advisory. This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This pat...

Important: Red Hat Security Advisory: kpatch-patch-5_14_0-687_10_1 security update

An update for kpatch-patch-5140-687101 is now available 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 each...

Important: Red Hat Security Advisory: kpatch-patch-5_14_0-427_100_1, kpatch-patch-5_14_0-427_113_1, kpatch-patch-5_14_0-427_126_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 security update

An update for multiple packages is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. 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...

Important: Red Hat Security Advisory: kpatch-patch-5_14_0-284_117_1, kpatch-patch-5_14_0-284_134_1, kpatch-patch-5_14_0-284_148_1, kpatch-patch-5_14_0-284_158_1, and kpatch-patch-5_14_0-284_172_1 security update

An update for multiple packages is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. 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...

Important: Red Hat Security Advisory: kpatch-patch-6_12_0-211_16_1 security update

An update for kpatch-patch-6120-211161 is now available for Red Hat Enterprise Linux 10. 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 each...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fixed the nested key length validation in the set action. It is not safe to access nlalenovskey if the data is smaller than the netlink header. Ensure that the attribute is valid first...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net: openvswitch: Fixed a leak in nested actions. When parsing user-provided actions, the openvswitch module may dynamically allocate memory and store pointers in the internal copy of the actions. This memory must be freed whe...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net: openvswitch: Fixed a race condition related to port output. Assume the following setup on a single machine: 1. An openvswitch instance with one bridge and default flows. 2. Two network namespaces: “server” and “client”. 3...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Avoid releasing netdev before teardown completes The patch cited in the “Fixes” section below changed the teardown code for OVS ports so that it no longer unconditionally takes RTNL. After this change, the...

Astra Linux – Vulnerability in OpenVSwitch

An integer underflow occurred in the Organization Specific TLV in various versions of OpenvSwitch...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix Use-After-Free in ovsctexit Since kfreercu, which is called during the hlistforeachentryrcu traversal of ovsctlimitexit, is not part of the RCU read critical section, it is possible that the RCU grace period...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fixed a possible memory leak in ovsmetercmdset. oldmeter needs to be freed after it is detached, regardless of whether the new meter is successfully attached...

Astra Linux – Vulnerability in OpenVSwitch

It has been discovered that openvswitch 2.17.8 contains a memory leak due to the xmalloc function in openvswitch-2.17.8/lib/util.c...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

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...

Astra Linux – Vulnerability in OpenVSwitch

A flaw was discovered in OpenVSwitch OVS. When processing an IP packet with protocol 0, OVS will install a datapath flow without modifying the IP header. This issue results in the installation of a datapath flow that matches all IP protocols with “nwproto” set to wildcard, but with an incorrect...