Null pointer dereference

Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will...

UBUNTU-CVE-2021-28691

Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will...

CVE-2021-28691

Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will...

CVE-2021-28691

Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will...

CVE-2021-28691

Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will...

CVE-2021-28691

Summary (CVE-2021-28691) In the Linux kernel Xen hypervisor integration, xen-netback may suffer a use-after-free when tearing down the backend. The root cause is that the RX task thread can be freed if the frontend triggers a thread stop during backend teardown, leading to a stale pointer being u...

CVE-2021-28691

Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will...

GSD-2021-1000822 xen-netback: take a reference to the RX task thread

xen-netback: take a reference to the RX task thread This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.10 by commit...

UVI-2021-1000822 xen-netback: take a reference to the RX task thread

xen-netback: take a reference to the RX task thread This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.12.10 by commit...

GSD-2021-1000787 xen-netback: take a reference to the RX task thread

xen-netback: take a reference to the RX task thread This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.43 by commit...

UVI-2021-1000787 xen-netback: take a reference to the RX task thread

xen-netback: take a reference to the RX task thread This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.43 by commit...

The vulnerability of the xen-netback component in the Linux operating system allows a hacker to increase their privileges or expose sensitive information.

The vulnerability of the xen-netback component in the Linux operating system exists due to insufficient validation of input data. Exploiting this vulnerability can allow a malicious actor to increase their privileges or disclose sensitive information...

SUSE: Security Advisory (SUSE-SU-2013:0674-1)

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...

Guest triggered use-after-free in Linux xen-netback

ISSUE DESCRIPTION A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux...

USN-4984-1 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities

Jan Beulich discovered that the Xen netback backend in the Linux kernel did not properly handle certain error conditions under paravirtualization. An attacker in a guest VM could possibly use this to cause a denial of service host domain crash. CVE-2021-28038 It was discovered that the Realtek...

PT-2024-11163

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to the xen-netback component in the Linux kernel, where a reference to the RX task thread needs to be taken to prevent the task from being freed if the thread return...

Ubuntu: Security Advisory (USN-4945-2)

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-4945-2: Linux kernel (Raspberry Pi) vulnerabilities

USN-4945-1 fixed vulnerabilities in the Linux kernel for Ubuntu 20.04 LTS and Ubuntu 18.04 LTS. This update provides the corresponding Linux kernel updates targeted specifically for Raspberry Pi devices in those same Ubuntu Releases. Original advisory details: It was discovered that the Nouveau G...

PT-2021-3379 · Linux +3 · Xen-Netback +3

Name of the Vulnerable Software and Affected Versions: Linux xen-netback affected versions not specified Description: A use-after-free issue exists in Linux xen-netback due to insufficient input validation. This can be triggered by a malicious or buggy network PV frontend sending a malformed...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4945-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4945-1 advisory. It was discovered that the Nouveau GPU driver in the Linux kernel did not properly handle error conditions in some situations. A local attack...