Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on upstream 5.10.37 and fixes at least the following security issues: It was discovered that the iouring implementation of the Linux kernel did not properly enforce the MAXRWCOUNT limit in some situations. A local attacker could use this to cause a denial of...

PT-2024-11175 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The issue is related to a double free on completion race in the io uring component of the Linux kernel. Specifically, it involves the io link timeout fn function and the removal of...

(Pwn2Own) Canonical Ubuntu io_uring Integer Overflow Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Canonical Ubuntu. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of...

Ubuntu: Security Advisory (USN-4949-1)

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...

USN-4949-1: Linux kernel vulnerabilities

Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service system crash or execute arbitrary code. CVE-2021-3489...

USN-4949-1 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities

Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service system crash or execute arbitrary code. CVE-2021-3489...

USN-4948-1: Linux kernel (OEM) vulnerabilities

Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service system crash or execute arbitrary code. CVE-2021-3489...

USN-4948-1 linux-oem-5.10 vulnerabilities

Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service system crash or execute arbitrary code. CVE-2021-3489...

CVE-2021-3491

A flaw was found in the Linux kernel. The iouring PROVIDEBUFFERS operation allowed the MAXRWCOUNT limit to be bypassed, which led to negative values being used in memrw when reading /proc//mem. The highest threat from this vulnerability is to data confidentiality and integrity as well as system...

UBUNTU-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...

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...

PT-2021-4237

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.13-rc1 Linux kernel versions 5.7-rc1 through 5.12.3 Linux kernel versions 5.11 through 5.11.20 Linux kernel versions 5.10 through 5.10.36 Description The issue is related to a buffer overflow in the io uring...

Linux fs/io_uring.c DoS

The vulnerability of the fs/iouring.c file in the Linux operating system arises due to synchronization errors when using a shared resource. Exploiting this vulnerability can allow an attacker to cause a service failure...

An issue was discovered in fs/io_uring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (deadlock) because exit may be waiting to park a SQPOLL thread but concurrently that SQPOLL thread is waiting for a signal to start aka CID-3ebba796fa25.

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AZL-6539 CVE-2021-28951 affecting package kernel for versions less than 5.10.78.1-1

An issue was discovered in fs/iouring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service deadlock because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25...

DEBIAN-CVE-2021-28951

An issue was discovered in fs/iouring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service deadlock because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25...

CVE-2021-28951

An issue was discovered in fs/iouring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service deadlock because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25...

UBUNTU-CVE-2021-28951

An issue was discovered in fs/iouring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service deadlock because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25...

Linux kernel 安全漏洞

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. A denial of service vulnerability exists in fs/iouring.c in Linux kernel 5.11.8 and earlier. The vulnerability stems...

Privilege Escalation

linux kernel is vulnerable to arbitrary code execution. A use-after-free in the iouring where a local attacker with a user privilege is able to cause a denial of service condition on the system and potentially obtain higher privileges due to the lack of validation of the existence of an object...