安全公告详情

NS-SA-2019-0165

2019-08-01 19:03:32

简介

important: kernel/kernel-rt security update

严重级别

important

主题

An update for kernel/kernel-rt is now available for NewStart CGSL MAIN 5.05/CGSL CORE 5.05.
NewStart Security has rated this update as having a security impact of important. A Common Vunlnerability Scoring System(CVSS)base score, which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.

详细描述

kernel: This package contains the perf tool, which enables performance monitoring of the Linux kernel.
kernel-rt: The kernel-rt package contains the Linux kernel (vmlinuz), the core of any Linux operating system. The kernel handles the basic functions of the operating system: memory allocation, process allocation, device input and output, etc. This kernel has been compiled with the RT patch applied and is intended for use in deterministic response-time situations


Security Fix(es):
kernel: 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) bytes. To efficiently process SACK blocks, the Linux kernel merges multiple fragmented SKBs into one, potentially overflowing the variable holding the number of segments. A remote attacker could use this flaw to crash the Linux kernel by sending a crafted sequence of SACK segments on a TCP connection with small value of TCP MSS, resulting in a denial of service (DoS).(CVE-2019-11477)
kernel: 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 utilization to traverse and process these fragments as further SACK segments are received on the same TCP connection. A remote attacker could use this flaw to cause a denial of service (DoS) by sending a crafted sequence of SACK segments on a TCP connection.(CVE-2019-11478)
kernel: An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP segments. If the Maximum Segment Size (MSS) of a TCP connection was set to low values, such as 48 bytes, it can leave as little as 8 bytes for the user data, which significantly increases the Linux kernel's resource (CPU, Memory, and Bandwidth) utilization. A remote attacker could use this flaw to cause a denial of service (DoS) by repeatedly sending network traffic on a TCP connection with low TCP MSS.(CVE-2019-11479)
kernel: bugfix
kernel-rt: Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.(CVE-2019-11091)
kernel-rt: 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) bytes. To efficiently process SACK blocks, the Linux kernel merges multiple fragmented SKBs into one, potentially overflowing the variable holding the number of segments. A remote attacker could use this flaw to crash the Linux kernel by sending a crafted sequence of SACK segments on a TCP connection with small value of TCP MSS, resulting in a denial of service (DoS).(CVE-2019-11477)
kernel-rt: 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 utilization to traverse and process these fragments as further SACK segments are received on the same TCP connection. A remote attacker could use this flaw to cause a denial of service (DoS) by sending a crafted sequence of SACK segments on a TCP connection.(CVE-2019-11478)
kernel-rt: An excessive resource consumption flaw was found in the way the Linux kernel's networking subsystem processed TCP segments. If the Maximum Segment Size (MSS) of a TCP connection was set to low values, such as 48 bytes, it can leave as little as 8 bytes for the user data, which significantly increases the Linux kernel's resource (CPU, Memory, and Bandwidth) utilization. A remote attacker could use this flaw to cause a denial of service (DoS) by repeatedly sending network traffic on a TCP connection with low TCP MSS.(CVE-2019-11479)
kernel-rt: bugfix


Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
http://security.gd-linux.com/how_to_apply_patch.html
Remember the build tag is 5.05.F4.

影响组件

  • kernel
  • kernel-rt

影响产品

  • CGSL MAIN 5.05
  • CGSL CORE 5.05

更新包

{"fix":[{"product":"CGSL MAIN 5.05","pkgs":[{"binary":["perf-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","perf-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-abi-whitelists-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.noarch.rpm","kernel-debug-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-debug-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","python-perf-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","python-perf-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","bpftool-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-debug-devel-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-debuginfo-common-x86_64-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-devel-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-doc-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.noarch.rpm","kernel-headers-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-tools-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-tools-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-tools-libs-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm","kernel-tools-libs-devel-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.x86_64.rpm"],"source":"kernel-3.10.0-957.21.3.el7.cgslv5_5.4.88.gc07cc84.src.rpm"},{"binary":["kernel-rt-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-devel-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-kvm-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-kvm-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debuginfo-common-x86_64-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-devel-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-doc-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.noarch.rpm","kernel-rt-kvm-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-kvm-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-devel-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-kvm-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-kvm-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm"],"source":"kernel-rt-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.src.rpm"}]},{"product":"CGSL CORE 5.05","pkgs":[{"binary":["python-perf-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","python-perf-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-abi-whitelists-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.noarch.rpm","kernel-core-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-debug-core-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","perf-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","perf-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-debug-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","bpftool-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-debug-devel-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-debug-modules-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-debuginfo-common-x86_64-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-devel-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-doc-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.noarch.rpm","kernel-headers-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-modules-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-tools-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-tools-debuginfo-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-tools-libs-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm","kernel-tools-libs-devel-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.x86_64.rpm"],"source":"kernel-3.10.0-957.21.3.el7.cgslv5_5.4.91.g3a74014.lite.src.rpm"},{"binary":["kernel-rt-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-devel-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-kvm-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debug-kvm-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-debuginfo-common-x86_64-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-devel-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-doc-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.noarch.rpm","kernel-rt-kvm-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-kvm-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-devel-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-kvm-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm","kernel-rt-trace-kvm-debuginfo-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.x86_64.rpm"],"source":"kernel-rt-3.10.0-957.21.3.rt56.935.el7.cgslv5_5.4.64.g2097f3a.src.rpm"}]}]}

CVE

参考