libvirt: leak of /dev/mapper/control into QEMU guests

A flaw was found in libvirt, where it leaked a file descriptor for /dev/mapper/control into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of...

Information Disclosure

libvirt is vulnerable to information disclosure. A file descriptor for /dev/mapper/control is leaked into the QEMU process. This file descriptor allows for privileged operations to be made against device mapper on the host...

CVE-2020-14339

A flaw was found in libvirt, where it leaked a file descriptor for /dev/mapper/control into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of...

The vulnerability of the Ceph storage system, related to an authentication process error, allows a perpetrator to gain unauthorized access to the encryption keys for dm-crypt.

The vulnerability of the Ceph storage system is related to an authentication process error. Exploiting this vulnerability could allow a malicious actor, operating remotely, to gain unauthorized access to the encryption keys used for dm-crypt...

kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service

The Linux kernel, before version 4.14.3, is vulnerable to a denial of service in drivers/md/dm.c:dmgetfromkobject which can be caused by local users leveraging a race condition with dmdestroy during creation and removal of DM devices. Only privileged local users with CAPSYSADMIN capability can...

NULL Pointer Dereference

The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way IP packets with an Internet Header Length ihl of zero were processed in the skbflowdissect function in the Linux kernel. A remote attacker could use this flaw to trigger an infinit...

Ubuntu 17.10 : Linux kernel (Raspberry Pi 2) vulnerabilities (USN-3657-1)

It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive information kernel netlink traffic. CVE-2017-17449 Tuba Yavuz discovered that a...

Ubuntu 17.10 : Linux kernel vulnerabilities (USN-3653-1) (Spectre)

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memor...

Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3655-1)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3655-1 advisory. Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a...

Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3653-2)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3653-2 advisory. USN-3653-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux...

Ubuntu: Security Advisory (USN-3657-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2018 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-3657-1: Linux kernel (Raspberry Pi 2) vulnerabilities

It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive information kernel netlink traffic. CVE-2017-17449 Tuba Yavuz discovered that a...

USN-3655-2: Linux kernel (Trusty HWE) vulnerabilities

USN-3655-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. Jann Horn and Ken Johnson discovered that microprocessors...

USN-3655-1: Linux kernel vulnerabilities

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memor...

USN-3655-1 linux vulnerabilities

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memor...

USN-3653-2: Linux kernel (HWE) vulnerabilities

USN-3653-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn and Ken Johnson discovered that microprocessors utilizing...

USN-3653-2 linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities

USN-3653-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn and Ken Johnson discovered that microprocessors utilizing...

USN-3653-1: Linux kernel vulnerabilities

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memor...

libvirt security and bug fix update

3.9.0-14.el75.4 - lxc: Drop useless check in live device update rhbz1557922 - Pass oldDev to virDomainDefCompatibleDevice on device update rhbz1557922 - qemu: Fix updating device with boot order rhbz1557922 - conf: Fix crash in virDomainDefCompatibleDevice rhbz1557922 - vmx: check for...

Debian DLA-1369-1 : linux security update (Spectre)

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2017-0861 Robb Glasser reported a potential use-after-free in the ALSA sound PCM core. We believe this was not possible in practice. CVE-2017-5715...