Executive Summary

Summary
Title kernel security and bug fix update
Informations
Name RHSA-2017:0892 First vendor Publication 2017-04-11
Vendor RedHat Last vendor Modification 2017-04-11
Severity (Vendor) N/A 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:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

An update for kernel is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* A race condition flaw was found in the N_HLDC Linux kernel driver when accessing n_hdlc.tbuf list that can lead to double free. A local, unprivileged user able to set the HDLC line discipline on the tty device could use this flaw to increase their privileges on the system. (CVE-2017-2636, Important)

* A flaw was found in the Linux kernel's implementation of seq_file where a local attacker could manipulate memory in the put() function pointer. This could lead to memory corruption and possible privileged escalation. (CVE-2016-7910, Moderate)

Red Hat would like to thank Alexander Popov for reporting CVE-2017-2636.

Bug Fix(es):

* Previously, Chelsio firmware included an incorrectly-formatted firmware bin file. As a consequence, the firmware could not be flashed. This update provides a firmware bin file that is formatted correctly. As a result, Chelsio firmware can now be flashed successfully. (BZ#1433865)

* When multiple simultaneous processes attempted to read from the /proc/stat file, spinlock overhead was generated on Non-Uniform Memory Access (NUMA) systems. Consequently, a large amount of CPU was consumed. With this update, the underlying source code has been fixed to avoid taking spinlock when the interrupt line does not exist. As a result, the spinlock overhead is now generated less often, and multiple simultaneous processes can now read /proc/stat without consuming a large amount of CPU. (BZ#1428106)

4. Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

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

The system must be rebooted for this update to take effect.

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

1399727 - CVE-2016-7910 kernel: Use after free in seq file 1428319 - CVE-2017-2636 kernel: Race condition access to n_hdlc.tbuf causes double free in n_hdlc_release()

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2017-0892.html

CWE : Common Weakness Enumeration

% Id Name
33 % CWE-416 Use After Free
33 % CWE-415 Double Free
33 % CWE-362 Race Condition

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 1
Os 2853

Nessus® Vulnerability Scanner

Date Description
2019-01-14 Name : The remote Virtuozzo host is missing multiple security updates.
File : Virtuozzo_VZA-2016-104.nasl - Type : ACT_GATHER_INFO
2017-09-05 Name : The remote Virtuozzo host is missing multiple security updates.
File : Virtuozzo_VZA-2017-076.nasl - Type : ACT_GATHER_INFO
2017-08-25 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0145.nasl - Type : ACT_GATHER_INFO
2017-08-25 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3609.nasl - Type : ACT_GATHER_INFO
2017-08-16 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-1842-1.nasl - Type : ACT_GATHER_INFO
2017-08-09 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2099-1.nasl - Type : ACT_GATHER_INFO
2017-08-09 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2096-1.nasl - Type : ACT_GATHER_INFO
2017-08-09 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2095-1.nasl - Type : ACT_GATHER_INFO
2017-08-09 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2093-1.nasl - Type : ACT_GATHER_INFO
2017-08-09 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2092-1.nasl - Type : ACT_GATHER_INFO
2017-08-09 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2088-1.nasl - Type : ACT_GATHER_INFO
2017-08-08 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2073-1.nasl - Type : ACT_GATHER_INFO
2017-08-08 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2060-1.nasl - Type : ACT_GATHER_INFO
2017-08-08 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2061-1.nasl - Type : ACT_GATHER_INFO
2017-08-08 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2072-1.nasl - Type : ACT_GATHER_INFO
2017-08-07 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2049-1.nasl - Type : ACT_GATHER_INFO
2017-07-13 Name : The remote Virtuozzo host is missing a security update.
File : Virtuozzo_VZLSA-2017-1308.nasl - Type : ACT_GATHER_INFO
2017-07-13 Name : The remote Virtuozzo host is missing a security update.
File : Virtuozzo_VZLSA-2017-0933.nasl - Type : ACT_GATHER_INFO
2017-07-13 Name : The remote Virtuozzo host is missing a security update.
File : Virtuozzo_VZLSA-2017-0892.nasl - Type : ACT_GATHER_INFO
2017-06-20 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1488.nasl - Type : ACT_GATHER_INFO
2017-05-30 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-1308.nasl - Type : ACT_GATHER_INFO
2017-05-30 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-1308-1.nasl - Type : ACT_GATHER_INFO
2017-05-26 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20170525_kernel_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2017-05-26 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2017-1308.nasl - Type : ACT_GATHER_INFO
2017-05-26 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1297.nasl - Type : ACT_GATHER_INFO
2017-05-26 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1308.nasl - Type : ACT_GATHER_INFO
2017-05-26 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1298.nasl - Type : ACT_GATHER_INFO
2017-05-17 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1233.nasl - Type : ACT_GATHER_INFO
2017-05-17 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1232.nasl - Type : ACT_GATHER_INFO
2017-05-17 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0106.nasl - Type : ACT_GATHER_INFO
2017-05-17 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0105.nasl - Type : ACT_GATHER_INFO
2017-05-17 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3567.nasl - Type : ACT_GATHER_INFO
2017-05-17 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3566.nasl - Type : ACT_GATHER_INFO
2017-05-02 Name : The remote EulerOS host is missing a security update.
File : EulerOS_SA-2017-1066.nasl - Type : ACT_GATHER_INFO
2017-05-01 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2016-1089.nasl - Type : ACT_GATHER_INFO
2017-05-01 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2017-1057.nasl - Type : ACT_GATHER_INFO
2017-04-26 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1126.nasl - Type : ACT_GATHER_INFO
2017-04-26 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1125.nasl - Type : ACT_GATHER_INFO
2017-04-19 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-0986.nasl - Type : ACT_GATHER_INFO
2017-04-14 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2017-0933.nasl - Type : ACT_GATHER_INFO
2017-04-14 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0062.nasl - Type : ACT_GATHER_INFO
2017-04-14 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0061.nasl - Type : ACT_GATHER_INFO
2017-04-14 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0060.nasl - Type : ACT_GATHER_INFO
2017-04-14 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3539.nasl - Type : ACT_GATHER_INFO
2017-04-14 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3538.nasl - Type : ACT_GATHER_INFO
2017-04-14 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3537.nasl - Type : ACT_GATHER_INFO
2017-04-14 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-0933-1.nasl - Type : ACT_GATHER_INFO
2017-04-13 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20170412_kernel_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2017-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-0933.nasl - Type : ACT_GATHER_INFO
2017-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-0932.nasl - Type : ACT_GATHER_INFO
2017-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-0931.nasl - Type : ACT_GATHER_INFO
2017-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-0892.nasl - Type : ACT_GATHER_INFO
2017-04-13 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-0933.nasl - Type : ACT_GATHER_INFO
2017-04-13 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2017-0892.nasl - Type : ACT_GATHER_INFO
2017-04-13 Name : The remote Virtuozzo host is missing a security update.
File : Virtuozzo_VZA-2017-028.nasl - Type : ACT_GATHER_INFO
2017-04-12 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20170411_kernel_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2017-04-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-0892.nasl - Type : ACT_GATHER_INFO
2017-04-04 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0913-1.nasl - Type : ACT_GATHER_INFO
2017-04-04 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0912-1.nasl - Type : ACT_GATHER_INFO
2017-04-03 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0058.nasl - Type : ACT_GATHER_INFO
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
2017-04-03 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2017-0056.nasl - Type : ACT_GATHER_INFO
2017-04-03 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3535.nasl - Type : ACT_GATHER_INFO
2017-04-03 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3534.nasl - Type : ACT_GATHER_INFO
2017-04-03 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-3533.nasl - Type : ACT_GATHER_INFO
2017-04-03 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2017-419.nasl - Type : ACT_GATHER_INFO
2017-04-03 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2017-418.nasl - Type : ACT_GATHER_INFO
2017-03-30 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0864-1.nasl - Type : ACT_GATHER_INFO
2017-03-30 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL18015201.nasl - Type : ACT_GATHER_INFO
2017-03-30 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0865-1.nasl - Type : ACT_GATHER_INFO
2017-03-30 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0866-1.nasl - Type : ACT_GATHER_INFO
2017-03-13 Name : The remote Fedora host is missing a security update.
File : fedora_2017-387ff46a66.nasl - Type : ACT_GATHER_INFO
2017-03-13 Name : The remote Fedora host is missing a security update.
File : fedora_2017-2e1f3694b2.nasl - Type : ACT_GATHER_INFO
2017-03-10 Name : The remote Debian host is missing a security update.
File : debian_DLA-849.nasl - Type : ACT_GATHER_INFO
2017-03-09 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3220-3.nasl - Type : ACT_GATHER_INFO
2017-03-09 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3804.nasl - Type : ACT_GATHER_INFO
2017-03-08 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3220-1.nasl - Type : ACT_GATHER_INFO
2017-03-08 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3218-1.nasl - Type : ACT_GATHER_INFO
2017-03-08 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3219-1.nasl - Type : ACT_GATHER_INFO
2017-03-08 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3219-2.nasl - Type : ACT_GATHER_INFO
2017-03-08 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3220-2.nasl - Type : ACT_GATHER_INFO
2017-03-08 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3221-1.nasl - Type : ACT_GATHER_INFO
2017-03-08 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3221-2.nasl - Type : ACT_GATHER_INFO
2017-02-22 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3207-2.nasl - Type : ACT_GATHER_INFO
2017-02-22 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3207-1.nasl - Type : ACT_GATHER_INFO
2017-02-22 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3206-1.nasl - Type : ACT_GATHER_INFO
2017-02-21 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0494-1.nasl - Type : ACT_GATHER_INFO
2017-02-16 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0471-1.nasl - Type : ACT_GATHER_INFO
2017-02-15 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0464-1.nasl - Type : ACT_GATHER_INFO
2017-02-10 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0437-1.nasl - Type : ACT_GATHER_INFO
2017-01-31 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-0333-1.nasl - Type : ACT_GATHER_INFO
2017-01-03 Name : The remote Debian host is missing a security update.
File : debian_DLA-772.nasl - Type : ACT_GATHER_INFO
2016-12-12 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-1431.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
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Date Informations
2017-09-06 13:25:19
  • Multiple Updates
2017-07-14 13:24:51
  • Multiple Updates
2017-04-15 13:24:21
  • Multiple Updates
2017-04-14 13:22:13
  • Multiple Updates
2017-04-11 17:24:20
  • First insertion