Important: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 8. 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 vulnerability from th...

Kernel: tcp: excessive resource consumption while processing SACK blocks allows remote denial of service

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...

Kernel: tcp: integer overflow while processing SACK blocks allows remote denial of service

An integer overflow 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. Each fragment is about TCP maximum segment size MSS...

USN-4017-2 linux, linux-aws, linux-azure, linux-lts-trusty, linux-lts-xenial vulnerabilities

USN-4017-1 fixed vulnerabilities in the Linux kernel for Ubuntu. This update provides the corresponding updates for the Linux kernel for Ubuntu 16.04 ESM and Ubuntu 14.04 ESM. Jonathan Looney discovered that the TCP retransmission queue implementation in the Linux kernel could be fragmented when...

USN-4017-2: Linux kernel vulnerabilities

USN-4017-1 fixed vulnerabilities in the Linux kernel for Ubuntu. This update provides the corresponding updates for the Linux kernel for Ubuntu 16.04 ESM and Ubuntu 14.04 ESM. Jonathan Looney discovered that the TCP retransmission queue implementation in the Linux kernel could be fragmented when...

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...

UBUNTU-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,...

[ASA-201906-12] linux-hardened: denial of service

Arch Linux Security Advisory ASA-201906-12 ========================================== Severity: High Date : 2019-06-17 CVE-ID : CVE-2019-11477 CVE-2019-11478 CVE-2019-11479 Package : linux-hardened Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-986 Summary =======...

Denial Of Service (DoS)

kernel-rt is vulnerable to denial of service DoS attacks. The vulnerability exists as 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...

SUSE SLES11 Security Update : kernel (SUSE-SU-2016:2976-1)

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. For the PowerPC64 a new 'bigmem' flavor has been added to support big Power machines. FATE319026 The following security bugs were fixed : - CVE-2016-7042: The prockeysshow function in security/keys/proc....

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...

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...

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...

DEBIAN-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...

Code injection

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...

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...

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...

CVE-2016-6828

The vulnerability CVE-2016-6828 affects the Linux kernel and is triggered by a local attacker exploiting a use-after-free in the TCP transmit path. Specifically, the tcp_check_send_head path in include/net/tcp.h leaves SACK state in an inconsistent condition after a failed data copy, enabling a l...

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...

UBUNTU-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...