TCP SACK PANIC

A Linux kernel vulnerability in TCP networking could allow DoS CVE-2019-11477 is considered an Important severity, whereas CVE-2019-11478 and CVE-2019-11479 are considered a Moderate severity. The first two are related to the Selective Acknowledgement SACK packets combined with Maximum Segment Si...

Virtuozzo 7 : readykernel-patch (VZA-2019-068)

According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - tcp: integer overflow while processing SACK blocks allows remote denial of service. An integer overflow was found in...

Virtuozzo 7 : readykernel-patch (VZA-2019-050)

According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - An integer overflow was found in the way the Linux kernel's networking subsystem processed TCP Selective...

Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2019-1639)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 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...

Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2019-1792)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 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...

Huawei EulerOS: Security Advisory for kernel (EulerOS-SA-2019-1692)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 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...

CVE-2019-11478

An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment SACK segments. While processing SACK segments, the Linux kernel's socket buffer SKB data structure becomes fragmented, which leads to increased resource...

Security Advisory - Integer Overflow Vulnerability in the Linux Kernel (SACK Panic)

An integer overflow vulnerability was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment SACK segments. A remote attacker could use this to cause a denial of service. Vulnerability ID: HWPSIRT-2019-06130 This vulnerability has been assigned a Common...

RancherOS < 1.5.3 Multiple Vulnerabilities (SACK Panic)

The remote host is running a version of RancherOS prior to v1.5.3, hence is exposed to multiple vulnerabilities: - Linux Kernel is prone to a remote integer-overflow vulnerability. An attacker can exploit this issue to cause denial-of-service conditions. CVE-2019-11477 - RancherOS is vulnerable t...

TCP SACK panic attack- Linux Kernel Vulnerabilities- CVE-2019-11477, CVE-2019-11478 & CVE-2019-11479

CVE-2019-11477: The Linux kernel is vulnerable to an integer overflow in the 16 bit width of TCPSKBCBskb-tcpgsosegs. A remote attacker could use this to cause a denial of service...

Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4850)

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4850 advisory. - vhost: make sure lognum innum yongduan Orabug: 30312787 CVE-2019-14835 - vhost: block speculation of translated descriptors Michael S. Tsirkin...

SUSE SLES12 Security Update : kernel (SUSE-SU-2019:2950-1) (SACK Panic)

The SUSE Linux Enterprise 12 SP1 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : CVE-2018-12207: Untrusted virtual machines on Intel CPUs could exploit a race condition in the Instruction Fetch Unit of the Intel CPU to cause a Machine Exceptio...

F5 Networks BIG-IP : Linux SACK Slowness vulnerability (K26618426)

Jonathan Looney discovered that the TCP retransmission queue implementation in tcpfragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment SACK sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel...

F5 Networks BIG-IP : Linux SACK Panic vulnerability (K78234183)

Jonathan Looney discovered that the TCPSKBCBskb-tcpgsosegs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments SACKs. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182,...

The vulnerability of the tcp_sack_option() function in the kernel of the OpenBSD operating system allows a hacker to cause a service failure.

The vulnerability of the tcpsackoption function in the kernel of the OpenBSD operating system exists due to insufficient validation of input data. Exploiting this vulnerability can allow a remote attacker to cause a service failure...

CVE-2019-8460

OpenBSD kernel version = 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcpsackoption for every incoming SACK packet which can lead to a denial of service...

CVE-2019-8460

OpenBSD kernel version = 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcpsackoption for every incoming SACK packet which can lead to a denial of service...

Code injection

OpenBSD kernel version = 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcpsackoption for every incoming SACK packet which can lead to a denial of service...

CVE-2019-8460

OpenBSD kernel version = 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcpsackoption for every incoming SACK packet which can lead to a denial of service...

Important kernel security update: Virtuozzo ReadyKernel patch 85.0 for Virtuozzo 7.0.7 to 7.0.10 HF1 and Virtuozzo Infrastructure Platform 2.5

The cumulative Virtuozzo ReadyKernel patch was updated with security and stability fixes. The patch applies to the kernels 3.10.0-693.17.1.vz7.43.10 Virtuozzo 7.0.7, 3.10.0-693.21.1.vz7.46.7 Virtuozzo 7.0.7 HF2, 3.10.0-693.21.1.vz7.48.2 Virtuozzo 7.0.7 HF3, 3.10.0-862.9.1.vz7.63.3 Virtuozzo 7.0.8...