Design/Logic Flaw

x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...

CVE-2021-3491

The iouring subsystem in the Linux kernel allowed the MAXRWCOUNT limit to be bypassed in the PROVIDEBUFFERS operation, which led to negative values being usedin memrw when reading /proc//mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was...

Out-of-bounds

The eBPF ALU32 bounds tracking for bitwise ops AND, OR and XOR in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e "bpf: Fix...

CVE-2021-3491 Linux kernel io_uring PROVIDE_BUFFERS MAX_RW_COUNT bypass

The iouring subsystem in the Linux kernel allowed the MAXRWCOUNT limit to be bypassed in the PROVIDEBUFFERS operation, which led to negative values being usedin memrw when reading /proc//mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was...

CVE-2021-3490 Linux kernel eBPF bitwise ops ALU32 bounds tracking

The eBPF ALU32 bounds tracking for bitwise ops AND, OR and XOR in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e "bpf: Fix...

CVE-2020-10774

A memory disclosure flaw was found in the Linux kernel's versions before 4.18.0-193.el8 in the sysctl subsystem when reading the /proc/sys/kernel/rhfeatures file. This flaw allows a local user to read uninitialized values from the kernel memory. The highest threat from this vulnerability is to...

glibc security, bug fix, and enhancement update

2.28-151.0.1.el84 - merge RH patches for ol8-u4 release Review-exception: Patch merge - Provide glibc.pthread.mutexspincount tunable for pthread adaptive - spin mutex Orabug: 27982358. Reviewed-by: Qing Zhao - add Ampere emag to tunable cpu list Patrick McGehearty - add optimized memset for emag ...

CVE-2020-24588

A flaw was found in the Linux kernels wifi implementation. An attacker within wireless broadcast range can inject custom data into the wireless communication circumventing checks on the data. This can cause the frame to pass checks and be considered a valid frame of a different type. Mitigation...

UBUNTU-CVE-2021-3490

The eBPF ALU32 bounds tracking for bitwise ops AND, OR and XOR in the Linux kernel did not properly update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e "bpf: Fix...

UBUNTU-CVE-2021-3489

The eBPF RINGBUF bpfringbufreserve function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee "bp...

MGASA-2021-0202 Updated nvidia390 packages fix security vulnerabilities

Updated nvidia390 packages fix security vulnerabilities: NVIDIA GPU Display Driver for Linux contains a vulnerability in the kernel mode layer nvidia.ko where improper access control may lead to denial of service, information disclosure, or data corruption CVE-2021-1076. It also fixes a bug where...

Updated nvidia390 packages fix security vulnerabilities

Updated nvidia390 packages fix security vulnerabilities: NVIDIA GPU Display Driver for Linux contains a vulnerability in the kernel mode layer nvidia.ko where improper access control may lead to denial of service, information disclosure, or data corruption CVE-2021-1076. It also fixes a bug where...

MGASA-2021-0203 Updated nvidia-current packages fix security vulnerabilities

Updated nvidia-current packages fix security vulnerabilities: NVIDIA GPU Display Driver for Linux contains a vulnerability in the kernel mode layer nvidia.ko where improper access control may lead to denial of service, information disclosure, or data corruption CVE-2021-1076. NVIDIA GPU Display...

Updated nvidia-current packages fix security vulnerabilities

Updated nvidia-current packages fix security vulnerabilities: NVIDIA GPU Display Driver for Linux contains a vulnerability in the kernel mode layer nvidia.ko where improper access control may lead to denial of service, information disclosure, or data corruption CVE-2021-1076. NVIDIA GPU Display...

OPENSUSE-SU-2021:0598-1 Security update for shim

This update for shim fixes the following issues: - Updated openSUSE x86 signature - Avoid the error message during linux system boot boo1184454 - Prevent the build id being added to the binary. That can cause issues with the signature Update to 15.4 boo1182057 + Rename the SBAT variable and fix t...

SUSE: Security Advisory (SUSE-SU-2019:0825-1)

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...

CVE-2021-3492

Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copyfromuser correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service kerne...

The vulnerability of the security module of the Titan M operating system for Android, which allows a perpetrator to gain unauthorized access to protected information

The vulnerability of the Titan M security module’s Android operating system kernels is related to initialization errors. Exploiting this vulnerability can allow an attacker to gain unauthorized access to protected information...

The vulnerability of the unix_stream_recvmsg function in Linux operating system kernels, which allows a hacker to cause a service failure

The vulnerability of the unixstreamrecvmsg function in Linux operating system kernels is related to uncontrolled resource consumption. Exploiting this vulnerability can allow an attacker to cause service failures...

DEBIAN-CVE-2021-3444

The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure kernel...