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CentOS Update for kernel CESA-2015:0674 centos6

Information

Severity

Severity

High

Family

Family

CentOS Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.2

CVSSv2 Vector

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

7 years ago

Modified

Modified

3 years ago

Summary

Check the version of kernel

Insight

Insight

The kernel packages contain the Linux kernel, the core of any Linux operating system. * It was found that the Linux kernel's Infiniband subsystem did not properly sanitize input parameters while registering memory regions from user space via the (u)verbs API. A local user with access to a /dev/infiniband/uverbsX device could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-8159, Important) * A flaw was found in the way the Linux kernel's splice() system call validated its parameters. On certain file systems, a local, unprivileged user could use this flaw to write past the maximum file size, and thus crash the system. (CVE-2014-7822, Moderate) * A flaw was found in the way the Linux kernel's netfilter subsystem handled generic protocol tracking. As demonstrated in the Stream Control Transmission Protocol (SCTP) case, a remote attacker could use this flaw to bypass intended iptables rule restrictions when the associated connection tracking module was not loaded on the system. (CVE-2014-8160, Moderate) * It was found that the fix for CVE-2014-3601 was incomplete: the Linux kernel's kvm_iommu_map_pages() function still handled IOMMU mapping failures incorrectly. A privileged user in a guest with an assigned host device could use this flaw to crash the host. (CVE-2014-8369, Moderate) Red Hat would like to thank Mellanox for reporting CVE-2014-8159, and Akira Fujita of NEC for reporting CVE-2014-7822. Bug fixes: * The maximum amount of entries in the IPv6 route table (net.ipv6.route.max_size) was 4096, and every route towards this maximum size limit was counted. Communication to more systems was impossible when the limit was exceeded. Now, only cached routes are counted, which guarantees that the kernel does not run out of memory, but the user can now install as many routes as the memory allows until the kernel indicates it can no longer handle the amount of memory and returns an error message. In addition, the default 'net.ipv6.route.max_size' value has been increased to 16384 for performance improvement reasons. (BZ#1177581) * When the user attempted to scan for an FCOE-served Logical Unit Number (LUN), after an initial LUN scan, a kernel panic occurred in bnx2fc_init_task. System scanning for LUNs is now stable after LUNs have been added. (BZ#1179098) * Under certain conditions, such as when attempting to scan the network for LUNs, a race condition in the bnx2fc driver could trigger a kernel panic in bnx2fc_init_task. A patch fixing a locking issue that caused the race condition has been applied, and scanning the network for LUNs no longer ... Description truncated, please see the referenced URL(s) for more information.

Affected Software

Affected Software

kernel on CentOS 6

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Please install the updated packages.

Common Vulnerabilities and Exposures (CVE)

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1. Download Multipass

sudo snap install multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

3. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. If you don’t have it already, install Brew. Then, to install Multipass simply execute:

brew install --cask multipass

2. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

2. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash

1. Download the installer for Windows

Note: You need Windows 10 Pro/Enterprise/Education v 1803 or later, or any Windows 10 with VirtualBox

2. Ensure your network is private

Make sure your local network is designated as private, otherwise Windows prevents Multipass from starting.

3. Run the installer

You need to allow the installer to gain Administrator privileges.

4. Launch a multipass instance

multipass launch -c 2 -m 6G -d 20G -n mageni 20.04

5. Log into the multipass instance

multipass shell mageni

6. Install Mageni

curl -sL https://www.mageni.net/installation | sudo bash