[RHSA-2015:0102-01] Important: kernel security and bug fix update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: kernel security and bug fix update

Advisory ID: RHSA-2015:0102-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0102.html

Issue date: 2015-01-28

CVE Names: CVE-2014-4171 CVE-2014-5471 CVE-2014-5472

CVE-2014-7145 CVE-2014-7822 CVE-2014-7841

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1. Summary:

 

Updated kernel packages that fix multiple 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) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, s390x, x86_64

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

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

* A flaw was found in the way the Linux kernel's SCTP implementation

validated INIT chunks when performing Address Configuration Change

(ASCONF). A remote attacker could use this flaw to crash the system by

sending a specially crafted SCTP packet to trigger a NULL pointer

dereference on the system. (CVE-2014-7841, Important)

 

* A race condition flaw was found in the way the Linux kernel's mmap(2),

madvise(2), and fallocate(2) system calls interacted with each other while

operating on virtual memory file system files. A local user could use this

flaw to cause a denial of service. (CVE-2014-4171, Moderate)

 

* A NULL pointer dereference flaw was found in the way the Linux kernel's

Common Internet File System (CIFS) implementation handled mounting of file

system shares. A remote attacker could use this flaw to crash a client

system that would mount a file system share from a malicious server.

(CVE-2014-7145, Moderate)

 

* 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)

 

* It was found that the parse_rock_ridge_inode_internal() function of the

Linux kernel's ISOFS implementation did not correctly check relocated

directories when processing Rock Ridge child link (CL) tags. An attacker

with physical access to the system could use a specially crafted ISO image

to crash the system or, potentially, escalate their privileges on the

system. (CVE-2014-5471, CVE-2014-5472, Low)

 

Red Hat would like to thank Akira Fujita of NEC for reporting the

CVE-2014-7822 issue. The CVE-2014-7841 issue was discovered by Liu Wei of

Red Hat.

 

This update also fixes the following bugs:

 

* Previously, a kernel panic could occur if a process reading from a locked

NFS file was killed and the lock was not released properly before the read

operations finished. Consequently, the system crashed. The code handling

file locks has been fixed, and instead of halting, the system now emits a

warning about the unreleased lock. (BZ#1172266)

 

* A race condition in the command abort handling logic of the ipr device

driver could cause the kernel to panic when the driver received a response

to an abort command prior to receiving other responses to the aborted

command due to the support for multiple interrupts. With this update, the

abort handler waits for the aborted command's responses first before

completing an abort operation. (BZ#1162734)

 

* Previously, a race condition could occur when changing a Page Table Entry

(PTE) or a Page Middle Directory (PMD) to "pte_numa" or "pmd_numa",

respectively, causing the kernel to crash. This update removes the BUG_ON()

macro from the __handle_mm_fault() function, preventing the kernel panic in

the aforementioned scenario. (BZ#1170662)

 

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.

 

This update is available via the Red Hat Network. Details on how to use the

Red Hat Network to apply this update are available at

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

 

To install kernel packages manually, use "rpm -ivh [package]". Do not use

"rpm -Uvh" as that will remove the running kernel binaries from your

system. You may use "rpm -e" to remove old kernels after determining that

the new kernel functions properly on your system.

 

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

 

1111180 - CVE-2014-4171 Kernel: mm/shmem: denial of service

1134099 - CVE-2014-5471 CVE-2014-5472 kernel: isofs: unbound recursion when processing relocated directories

1147522 - CVE-2014-7145 Kernel: cifs: NULL pointer dereference in SMB2_tcon

1163087 - CVE-2014-7841 kernel: net: sctp: NULL pointer dereference in af->from_addr_param on malformed packet

1163792 - CVE-2014-7822 kernel: splice: lack of generic write checks

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

kernel-3.10.0-123.20.1.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-123.20.1.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-devel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7.x86_64.rpm

kernel-devel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-headers-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-libs-3.10.0-123.20.1.el7.x86_64.rpm

perf-3.10.0-123.20.1.el7.x86_64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

 

Red Hat Enterprise Linux Client Optional (v. 7):

 

noarch:

kernel-doc-3.10.0-123.20.1.el7.noarch.rpm

 

x86_64:

kernel-debug-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-123.20.1.el7.x86_64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

kernel-3.10.0-123.20.1.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-123.20.1.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-devel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7.x86_64.rpm

kernel-devel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-headers-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-libs-3.10.0-123.20.1.el7.x86_64.rpm

perf-3.10.0-123.20.1.el7.x86_64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

 

noarch:

kernel-doc-3.10.0-123.20.1.el7.noarch.rpm

 

x86_64:

kernel-debug-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-123.20.1.el7.x86_64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

kernel-3.10.0-123.20.1.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-123.20.1.el7.noarch.rpm

 

ppc64:

kernel-3.10.0-123.20.1.el7.ppc64.rpm

kernel-bootwrapper-3.10.0-123.20.1.el7.ppc64.rpm

kernel-debug-3.10.0-123.20.1.el7.ppc64.rpm

kernel-debug-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

kernel-debug-devel-3.10.0-123.20.1.el7.ppc64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

kernel-debuginfo-common-ppc64-3.10.0-123.20.1.el7.ppc64.rpm

kernel-devel-3.10.0-123.20.1.el7.ppc64.rpm

kernel-headers-3.10.0-123.20.1.el7.ppc64.rpm

kernel-tools-3.10.0-123.20.1.el7.ppc64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

kernel-tools-libs-3.10.0-123.20.1.el7.ppc64.rpm

perf-3.10.0-123.20.1.el7.ppc64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

 

s390x:

kernel-3.10.0-123.20.1.el7.s390x.rpm

kernel-debug-3.10.0-123.20.1.el7.s390x.rpm

kernel-debug-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

kernel-debug-devel-3.10.0-123.20.1.el7.s390x.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

kernel-debuginfo-common-s390x-3.10.0-123.20.1.el7.s390x.rpm

kernel-devel-3.10.0-123.20.1.el7.s390x.rpm

kernel-headers-3.10.0-123.20.1.el7.s390x.rpm

kernel-kdump-3.10.0-123.20.1.el7.s390x.rpm

kernel-kdump-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

kernel-kdump-devel-3.10.0-123.20.1.el7.s390x.rpm

perf-3.10.0-123.20.1.el7.s390x.rpm

perf-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

 

x86_64:

kernel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-devel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7.x86_64.rpm

kernel-devel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-headers-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-libs-3.10.0-123.20.1.el7.x86_64.rpm

perf-3.10.0-123.20.1.el7.x86_64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 7):

 

noarch:

kernel-doc-3.10.0-123.20.1.el7.noarch.rpm

 

ppc64:

kernel-debug-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

kernel-debuginfo-common-ppc64-3.10.0-123.20.1.el7.ppc64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

kernel-tools-libs-devel-3.10.0-123.20.1.el7.ppc64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

python-perf-3.10.0-123.20.1.el7.ppc64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.ppc64.rpm

 

s390x:

kernel-debug-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

kernel-debuginfo-common-s390x-3.10.0-123.20.1.el7.s390x.rpm

kernel-kdump-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

perf-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

python-perf-3.10.0-123.20.1.el7.s390x.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.s390x.rpm

 

x86_64:

kernel-debug-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-123.20.1.el7.x86_64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

kernel-3.10.0-123.20.1.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-123.20.1.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debug-devel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7.x86_64.rpm

kernel-devel-3.10.0-123.20.1.el7.x86_64.rpm

kernel-headers-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-libs-3.10.0-123.20.1.el7.x86_64.rpm

perf-3.10.0-123.20.1.el7.x86_64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 7):

 

noarch:

kernel-doc-3.10.0-123.20.1.el7.noarch.rpm

 

x86_64:

kernel-debug-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-123.20.1.el7.x86_64.rpm

perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-3.10.0-123.20.1.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-123.20.1.el7.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2014-4171

https://access.redhat.com/security/cve/CVE-2014-5471

https://access.redhat.com/security/cve/CVE-2014-5472

https://access.redhat.com/security/cve/CVE-2014-7145

https://access.redhat.com/security/cve/CVE-2014-7822

https://access.redhat.com/security/cve/CVE-2014-7841

https://access.redhat.com/security/updates/classification/#important

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2015 Red Hat, Inc.

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