Executive Summary

Summary
Title kernel security and bug fix update
Informations
Name RHSA-2015:0726 First vendor Publication 2015-03-26
Vendor RedHat Last vendor Modification 2015-03-26
Severity (Vendor) Important Revision 01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated kernel packages that fix two security issues and several bugs are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

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 use-after-free flaw was found in the way the Linux kernel's SCTP implementation handled authentication key reference counting during INIT collisions. A remote attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2015-1421, Important)

Red Hat would like to thank Mellanox for reporting the CVE-2014-8159 issue. The CVE-2015-1421 issue was discovered by Sun Baoliang of Red Hat.

This update also fixes the following bugs:

* In certain systems with multiple CPUs, when a crash was triggered on one CPU with an interrupt handler and this CPU sent Non-Maskable Interrupt (NMI) to another CPU, and, at the same time, ioapic_lock had already been acquired, a deadlock occurred in ioapic_lock. As a consequence, the kdump service could become unresponsive. This bug has been fixed and kdump now works as expected. (BZ#1197742)

* On Lenovo X1 Carbon 3rd Gen, X250, and T550 laptops, the thinkpad_acpi module was not properly loaded, and thus the function keys and radio switches did not work. This update applies a new string pattern of BIOS version, which fixes this bug, and function keys and radio switches now work as intended. (BZ#1197743)

* During a heavy file system load involving many worker threads, all worker threads in the pool became blocked on a resource, and no manager thread existed to create more workers. As a consequence, the running processes became unresponsive. With this update, the logic around manager creation has been changed to assure that the last worker thread becomes a manager thread and does not start executing work items. Now, a manager thread exists, spawns new workers as needed, and processes no longer hang. (BZ#1197744)

* If a thin-pool's metadata enters read-only or fail mode, for example, due to thin-pool running out of metadata or data space, any attempt to make metadata changes such as creating a thin device or snapshot thin device should error out cleanly. However, previously, the kernel code returned verbose and alarming error messages to the user. With this update, due to early trapping of attempt to make metadata changes, informative errors are displayed, no longer unnecessarily alarming the user. (BZ#1197745)

* When running Red Hat Enterprise Linux as a guest on Microsoft Hyper-V hypervisor, the storvsc module did not return the correct error code for the upper level Small Computer System Interface (SCSI) subsystem. As a consequence, a SCSI command failed and storvsc did not handle such a failure properly under some conditions, for example, when RAID devices were created on top of storvsc devices. An upstream patch has been applied to fix this bug, and storvsc now returns the correct error code in the described situation. (BZ#1197749)

All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.

4. Solution:

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1181166 - CVE-2014-8159 kernel: infiniband: uverbs: unprotected physical memory access 1196581 - CVE-2015-1421 kernel: net: slab corruption from use after free on INIT collisions

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2015-0726.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-264 Permissions, Privileges, and Access Controls

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:29248
 
Oval ID: oval:org.mitre.oval:def:29248
Title: RHSA-2015:0803 -- kernel security and bug fix update (Important)
Description: The kernel packages contain the Linux kernel, the core of any Linux operating system.
Family: unix Class: patch
Reference(s): RHSA-2015:0803
CVE-2013-2596
CVE-2014-5471
CVE-2014-5472
CVE-2014-8159
Version: 3
Platform(s): Red Hat Enterprise Linux 6
Product(s): kernel
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 3
Os 2
Os 2182
Os 1

Nessus® Vulnerability Scanner

Date Description
2017-04-03 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0057.nasl - Type : ACT_GATHER_INFO
2016-03-18 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2016-0037.nasl - Type : ACT_GATHER_INFO
2016-02-03 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-124.nasl - Type : ACT_GATHER_INFO
2015-09-10 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL17242.nasl - Type : ACT_GATHER_INFO
2015-09-03 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-1478-1.nasl - Type : ACT_GATHER_INFO
2015-07-06 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-1174-1.nasl - Type : ACT_GATHER_INFO
2015-06-18 Name : The remote Debian host is missing a security update.
File : debian_DLA-246.nasl - Type : ACT_GATHER_INFO
2015-06-17 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-1071-1.nasl - Type : ACT_GATHER_INFO
2015-06-10 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-1082.nasl - Type : ACT_GATHER_INFO
2015-05-27 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-1030.nasl - Type : ACT_GATHER_INFO
2015-05-15 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2015-0060.nasl - Type : ACT_GATHER_INFO
2015-05-01 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0919.nasl - Type : ACT_GATHER_INFO
2015-04-27 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3237.nasl - Type : ACT_GATHER_INFO
2015-04-23 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0870.nasl - Type : ACT_GATHER_INFO
2015-04-23 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0864.nasl - Type : ACT_GATHER_INFO
2015-04-22 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0864.nasl - Type : ACT_GATHER_INFO
2015-04-22 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0864.nasl - Type : ACT_GATHER_INFO
2015-04-15 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0803.nasl - Type : ACT_GATHER_INFO
2015-04-10 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2015-0040.nasl - Type : ACT_GATHER_INFO
2015-04-10 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0783.nasl - Type : ACT_GATHER_INFO
2015-04-09 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2563-1.nasl - Type : ACT_GATHER_INFO
2015-04-09 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2562-1.nasl - Type : ACT_GATHER_INFO
2015-04-08 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0783.nasl - Type : ACT_GATHER_INFO
2015-04-08 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0782.nasl - Type : ACT_GATHER_INFO
2015-04-08 Name : The remote Fedora host is missing a security update.
File : fedora_2015-5024.nasl - Type : ACT_GATHER_INFO
2015-04-08 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0783.nasl - Type : ACT_GATHER_INFO
2015-04-01 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0727.nasl - Type : ACT_GATHER_INFO
2015-04-01 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0726.nasl - Type : ACT_GATHER_INFO
2015-03-31 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0751.nasl - Type : ACT_GATHER_INFO
2015-03-27 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0726.nasl - Type : ACT_GATHER_INFO
2015-03-27 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0726.nasl - Type : ACT_GATHER_INFO
2015-03-26 Name : The remote Debian host is missing a security update.
File : debian_DLA-155.nasl - Type : ACT_GATHER_INFO
2015-03-25 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2545-1.nasl - Type : ACT_GATHER_INFO
2015-03-25 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2541-1.nasl - Type : ACT_GATHER_INFO
2015-03-25 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2546-1.nasl - Type : ACT_GATHER_INFO
2015-03-18 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0695.nasl - Type : ACT_GATHER_INFO
2015-03-13 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0674.nasl - Type : ACT_GATHER_INFO
2015-03-12 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2530-1.nasl - Type : ACT_GATHER_INFO
2015-03-12 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2529-1.nasl - Type : ACT_GATHER_INFO
2015-03-12 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2528-1.nasl - Type : ACT_GATHER_INFO
2015-03-12 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2527-1.nasl - Type : ACT_GATHER_INFO
2015-03-12 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2526-1.nasl - Type : ACT_GATHER_INFO
2015-03-12 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2525-1.nasl - Type : ACT_GATHER_INFO
2015-03-12 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0674.nasl - Type : ACT_GATHER_INFO
2015-03-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0674.nasl - Type : ACT_GATHER_INFO
2015-02-24 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3170.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
Date Informations
2015-12-05 13:27:54
  • Multiple Updates
2015-04-02 13:28:09
  • Multiple Updates
2015-03-28 13:27:15
  • Multiple Updates
2015-03-26 21:32:24
  • First insertion