LSN-0079-1 Kernel Live Patch Security Notice

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.CVE-2021-3600 It was discovered that the virtual file system...

USN-5018-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service system crash or execute arbitrary code. CVE-2021-33909 Piotr Krysiuk discovered that the eBPF...

USN-5018-1: Linux kernel vulnerabilities

It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service system crash or execute arbitrary code. CVE-2021-33909 Piotr Krysiuk discovered that the eBPF...

Cilium - eBPF-based Networking, Security, And Observability

Cilium is open source software for providing and transparently securing network connectivity and loadbalancing between application workloads such as application containers or processes. Cilium operates at Layer 3/4 to provide traditional networking and security services as well as Layer 7 to...

Linux kernel buffer overflow vulnerability (CNVD-2021-54395)

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 the Linux kernel. The vulnerability stems from the discovery that the eBPF ALU32 bounds trace for bitwise operations AND, OR and XOR does not...

Linux kernel buffer overflow vulnerability (CNVD-2021-54396)

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 the Linux kernel. The vulnerability stems from the fact that eBPF RINGBUF bpfringbufreserve does not check if the allocated size is smaller...

CVE-2021-3600

A flaw was found in the Linux kernel’s eBPF verification code, where the eBPF 32-bit div/mod source register truncation could lead to out-of-bounds reads and writes. By default, accessing the eBPF verifier is only possible to privileged users with CAPSYSADMIN. This flaw allows a local user who ca...

USN-5000-1: Linux kernel vulnerabilities | Cloud Foundry

Severity High Vendor Canonical Ubuntu Versions Affected Canonical Ubuntu 18.04 Description Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute...

SUSE SLES15 Security Update : kernel (Live Patch 0 for SLE 15 SP3) (SUSE-SU-2021:2198-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2198-1 advisory. This update for the Linux Kernel 5.3.18-57 fixes several issues. The following issues were fixed: - CVE-2021-3489: Fixed an issue where the eBP...

SUSE-SU-2021:2198-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

This update for the Linux Kernel 5.3.18-57 fixes several issues. The following issues were fixed: - CVE-2021-3489: Fixed an issue where the eBPF RINGBUF bpfringbufreserve did not check that the allocated size was smaller than the ringbuf size bsc1185640. - CVE-2021-3490: Fixed an issue where the...

Ubuntu: Security Advisory (USN-5000-2)

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...

USN-5000-2 linux-kvm vulnerabilities

USN-5000-1 fixed vulnerabilities in the Linux kernel for Ubuntu 20.04 LTS and the Linux HWE kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux KVM kernel for Ubuntu 20.04 LTS. Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of...

USN-5000-2: Linux kernel (KVM) vulnerabilities

USN-5000-1 fixed vulnerabilities in the Linux kernel for Ubuntu 20.04 LTS and the Linux HWE kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux KVM kernel for Ubuntu 20.04 LTS. Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of...

Exploit for Improper Input Validation in Linux Linux_Kernel

LinuxLPEeBPFCVE-2021-3490 LPE exploit for CVE-2021-3490. T...

USN-5001-1: Linux kernel (OEM) vulnerabilities

Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. CVE-2021-3609 Mathy Vanhoef discovered that the Linux kernel’s WiFi implementati...

USN-4999-1: Linux kernel vulnerabilities

Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. CVE-2021-3609 Piotr Krysiuk discovered that the eBPF implementation in the Linux...

USN-4997-1: Linux kernel vulnerabilities

Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. CVE-2021-3609 Piotr Krysiuk discovered that the eBPF implementation in the Linux...

Ubuntu 16.04 ESM / 18.04 LTS : Linux kernel vulnerabilities (USN-5003-1)

The remote Ubuntu 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5003-1 advisory. Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free...

PT-2021-3381

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.12.13 Description The issue is related to a branch misprediction in the Linux kernel's eBPF subsystem, which can be exploited via a side-channel attack, allowing an unprivileged BPF program to read arbitrary...

CVE-2021-3600

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code...