Security Bulletin: IBM Flex System switch firmware products are affected by TCP denial of service vulnerabilities

Summary IBM Flex System switch firmware products have addressed the following TCP denial of service vulnerabilities. Vulnerability Details CVEID: CVE-2019-11478 DESCRIPTION: Jonathan Looney discovered that the TCP retransmission queue implementation in tcpfragment in the Linux kernel could be...

sack-druck.de Improper Access Control vulnerability OBB-3770723

Following the coordinated and responsible vulnerability disclosure guidelines of the ISO 29147 standard, Open Bug Bounty has: a. verified the vulnerability and confirmed its existence; b. notified the website operator about its existence. Technical details of the vulnerability are currently hidde...

Sprecher Automation SPRECON-E TCP SACK PANIC (CVE-2019-11478)

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...

Sprecher Automation SPRECON-E TCP SACK PANIC (CVE-2019-11477)

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,...

Sprecher Automation SPRECON-E TCP SACK PANIC (CVE-2019-11479)

Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service. This has been fixed in stable kerne...

K62442245: Kernel vulnerability CVE-2016-6828

Security Advisory Description The tcpchecksendhead function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service tcpxmitretransmitqueue use-after-free and system crash vi...

K75521003: FreeBSD SACK Slowness vulnerability CVE-2019-5599

Security Advisory Description In FreeBSD 12.0-STABLE before r349197 and 12.0-RELEASE before 12.0-RELEASE-p6, a bug in the non-default RACK TCP stack can allow an attacker to cause several linked lists to grow unbounded and cause an expensive list traversal on every packet being processed, leading...

K78234183: Linux SACK Panic vulnerability CVE-2019-11477

Security Advisory Description 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...

SUSE CVE-2016-6828

The tcpchecksendhead function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service tcpxmitretransmitqueue use-after-free and system crash via a crafted SACK option...

SUSE CVE-2019-11478

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...

SA44193 - 2019-06: Out-of-Cycle Advisory: Multiple Linux Kernel and FreeBSD vulnerabilities

Last Modified Date Aug 24, 2026 12:35:11 AM...

CVE-2021-31889

A vulnerability has been identified in Capital Embedded AR Classic 431-422 All versions, Capital Embedded AR Classic R20-11 All versions V2303, PLUSCONTROL 1st Gen All versions, SIMOTICS CONNECT 400 All versions V0.5.0.0. Malformed TCP packets with a corrupted SACK option leads to Information Lea...

CVE-2021-31889

A vulnerability has been identified in Capital Embedded AR Classic 431-422 All versions, Capital Embedded AR Classic R20-11 All versions V2303, PLUSCONTROL 1st Gen All versions, SIMOTICS CONNECT 400 All versions V0.5.0.0. Malformed TCP packets with a corrupted SACK option leads to Information Lea...

CVE-2021-31889: Integer Underflow (Wrap or Wraparound)

A vulnerability has been identified in Capital Embedded AR Classic 431-422 All versions, Capital Embedded AR Classic R20-11 All versions V2303, PLUSCONTROL 1st Gen All versions, SIMOTICS CONNECT 400 All versions V0.5.0.0. Malformed TCP packets with a corrupted SACK option leads to Information Lea...

SUSE: Security Advisory (SUSE-SU-2019:14127-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

Security Bulletin: IBM DataPower Gateway is affected by Denial of Service vulnerabilities

Summary IBM DataPower Gateway has addressed the following vulnerabilities: CVE-2019-11479 CVE-2019-11478 CVE-2019-11477 Vulnerability Details CVEID: CVE-2019-11479 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by a flaw when processing minimum segment size MSS. By sending...

ArubaOS-CX < 10.3.0001 (ARUBA-PSA-2020-010)

The version of ArubaOS-CX installed on the remote host is prior to version 10.3.0001. It is, therefore, affected by multiple vulnerabilities, as follows: - Jonathan Looney discovered that the TCPSKBCBskb-tcpgsosegs value was subject to an integer overflow in the Linux kernel when handling TCP...

SUSE: Security Advisory (SUSE-SU-2019:1530-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

SUSE: Security Advisory (SUSE-SU-2019:1924-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

Security Bulletin: IBM Cloud Pak System addressed vulnerabilities (CVE-2019-11479, CVE-2019-11478, CVE-2019-11477)

Summary IBM Cloud Pak System identified vulnerabilities in SAN VC supporting products. IBM announced a new release for IBM Cloud Pak System in response to vulnerabilities. Vulnerability Details CVEID: CVE-2019-11477 DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by an...