Important: kernel

Issue Overview: A kernel information leak flaw was identified in the scsiioctl function in drivers/scsi/scsiioctl.c in the Linux kernel. This flaw allows a local attacker with a special user privilege CAPSYSADMIN or CAPSYSRAWIO to create issues with confidentiality. CVE-2022-0494 An information...

kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak

The Linux kernel's TCP source port generation algorithm in the TCP stack contains a flaw due to the small table perturb size. This flaw allows an attacker to positively distinguish a system among devices with identical hardware and software, which lasts until the device restarts. An attacker can...

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

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. 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 f...

RHEL 9 : kpatch-patch (RHSA-2022:5214)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2022:5214 advisory. This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel...

SUSE SLES15 Security Update : kernel (SUSE-SU-2022:2172-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:2172-1 advisory. - The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database aka dbx protection...

Linux kernel 安全特征问题漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in versions of Linux kernel prior to 5.17.9 that allows a TCP server to recognize a client by looking at the source port used...

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on upstream 5.15.41 and fixes at least the following security issues: A flaw was found in unrestricted eBPF usage by the BPFBTFLOAD, leading to a possible out-of-bounds memory write in the Linux kernel BPF subsystem due to the way a user loads BTF. This flaw allo...

Updated kernel packages fix security vulnerabilities

This kernel update is based on upstream 5.15.41 and fixes at least the following security issues: A flaw was found in unrestricted eBPF usage by the BPFBTFLOAD, leading to a possible out-of-bounds memory write in the Linux kernel BPF subsystem due to the way a user loads BTF. This flaw allows a...

CVE-2022-1012

A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem...

CVE-2022-1012

The Linux kernel's TCP source port generation algorithm in the TCP stack contains a flaw due to the small table perturb size. This flaw allows an attacker to positively distinguish a system among devices with identical hardware and software, which lasts until the device restarts. An attacker can...

CVE-2022-26071

On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all versions of 12.1.x and 11.6.x, a flaw in the way reply ICMP packets are limited in the Traffic Management Microkernel TMM allows an attack...

Unpatched DNS Related Vulnerability Affects a Wide Range of IoT Devices

Cybersecurity researchers have disclosed an unpatched security vulnerability that could pose a serious risk to IoT products. The issue, which was originally reported in September 2021, affects the Domain Name System DNS implementation of two popular C libraries called uClibc and uClibc-ng that ar...

CVE-2021-20322

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...

Design/Logic Flaw

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...

CVE-2021-20322

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...

AlmaLinux 8 : kernel (ALSA-2021:0558)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2021:0558 advisory. - A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor...

CVE-2021-31228

An issue was discovered in HCC embedded InterNiche 4.0.1. This vulnerability allows the attacker to predict a DNS query's source port in order to send forged DNS response packets that will be accepted as valid answers to the DNS client's requests without sniffing the specific request. Data is...

SUSE: Security Advisory (SUSE-SU-2020:3507-1)

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...

kernel: ICMP rate limiting can be used for DNS poisoning attack

A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentialit...

dnsmasq 安全漏洞

dnsmasq is a lightweight DNS forwarding and DHCP and TFTP server written in C. It can be used as a server to forward DNS, DHCP, and TFTP. A security vulnerability exists in dnsmasq that stems from the random source port behavior being disabled, allowing caching attacks...