[RHSA-2015:2152-02] Important: kernel security, bug fix, and enhancement update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Important: kernel security, bug fix, and enhancement update

Advisory ID: RHSA-2015:2152-02

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-2152.html

Issue date: 2015-11-19

CVE Names: CVE-2010-5313 CVE-2013-7421 CVE-2014-3647

CVE-2014-7842 CVE-2014-8171 CVE-2014-9419

CVE-2014-9644 CVE-2015-0239 CVE-2015-2925

CVE-2015-3339 CVE-2015-4170 CVE-2015-5283

CVE-2015-6526 CVE-2015-7613 CVE-2015-7837

=====================================================================

 

1. Summary:

 

Updated kernel packages that fix multiple security issues, address several

hundred bugs, and add numerous enhancements are now available as part of

the ongoing support and maintenance of Red Hat Enterprise Linux version 7.

This is the second regular update.

 

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, 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.

 

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

handled rename operations in which the source was inside and the

destination was outside of a bind mount. A privileged user inside a

container could use this flaw to escape the bind mount and, potentially,

escalate their privileges on the system. (CVE-2015-2925, Important)

 

* A race condition flaw was found in the way the Linux kernel's IPC

subsystem initialized certain fields in an IPC object structure that were

later used for permission checking before inserting the object into a

globally visible list. A local, unprivileged user could potentially use

this flaw to elevate their privileges on the system. (CVE-2015-7613,

Important)

 

* It was found that reporting emulation failures to user space could lead

to either a local (CVE-2014-7842) or a L2->L1 (CVE-2010-5313) denial of

service. In the case of a local denial of service, an attacker must have

access to the MMIO area or be able to access an I/O port. (CVE-2010-5313,

CVE-2014-7842, Moderate)

 

* A flaw was found in the way the Linux kernel's KVM subsystem handled

non-canonical addresses when emulating instructions that change the RIP

(for example, branches or calls). A guest user with access to an I/O or

MMIO region could use this flaw to crash the guest. (CVE-2014-3647,

Moderate)

 

* It was found that the Linux kernel memory resource controller's (memcg)

handling of OOM (out of memory) conditions could lead to deadlocks.

An attacker could use this flaw to lock up the system. (CVE-2014-8171,

Moderate)

 

* A race condition flaw was found between the chown and execve system

calls. A local, unprivileged user could potentially use this flaw to

escalate their privileges on the system. (CVE-2015-3339, Moderate)

 

* A flaw was discovered in the way the Linux kernel's TTY subsystem handled

the tty shutdown phase. A local, unprivileged user could use this flaw to

cause a denial of service on the system. (CVE-2015-4170, Moderate)

 

* A NULL pointer dereference flaw was found in the SCTP implementation.

A local user could use this flaw to cause a denial of service on the system

by triggering a kernel panic when creating multiple sockets in parallel

while the system did not have the SCTP module loaded. (CVE-2015-5283,

Moderate)

 

* A flaw was found in the way the Linux kernel's perf subsystem retrieved

userlevel stack traces on PowerPC systems. A local, unprivileged user could

use this flaw to cause a denial of service on the system. (CVE-2015-6526,

Moderate)

 

* A flaw was found in the way the Linux kernel's Crypto subsystem handled

automatic loading of kernel modules. A local user could use this flaw to

load any installed kernel module, and thus increase the attack surface of

the running kernel. (CVE-2013-7421, CVE-2014-9644, Low)

 

* An information leak flaw was found in the way the Linux kernel changed

certain segment registers and thread-local storage (TLS) during a context

switch. A local, unprivileged user could use this flaw to leak the user

space TLS base address of an arbitrary process. (CVE-2014-9419, Low)

 

* It was found that the Linux kernel KVM subsystem's sysenter instruction

emulation was not sufficient. An unprivileged guest user could use this

flaw to escalate their privileges by tricking the hypervisor to emulate a

SYSENTER instruction in 16-bit mode, if the guest OS did not initialize the

SYSENTER model-specific registers (MSRs). Note: Certified guest operating

systems for Red Hat Enterprise Linux with KVM do initialize the SYSENTER

MSRs and are thus not vulnerable to this issue when running on a KVM

hypervisor. (CVE-2015-0239, Low)

 

* A flaw was found in the way the Linux kernel handled the securelevel

functionality after performing a kexec operation. A local attacker could

use this flaw to bypass the security mechanism of the

securelevel/secureboot combination. (CVE-2015-7837, Low)

 

4. Solution:

 

Red Hat would like to thank Nadav Amit for reporting the CVE-2010-5313,

CVE-2014-3647, CVE-2014-7842, and CVE-2015-0239 issues; and Linn Crosetto

of HP for reporting the CVE-2015-7837 issue. The CVE-2015-5283 issue was

discovered by Ji Jianwen from Red Hat engineering.

 

This update fixes several hundred bugs and adds numerous enhancements.

Refer to the Red Hat Enterprise Linux 7.2 Release Notes for information on

the most significant of these changes, and the following Knowledge base

article for further information:

 

https://access.redhat.com/articles/1749293

 

All Red Hat Enterprise Linux 7 users are advised to install these updated

packages, which correct these issues and add these enhancements. The system

must be rebooted for this update to take effect.

 

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/):

 

839466 - ext4: ext4 driver should reject nonsensical mount options for ext2 and ext3

1033907 - Test case failure: Outputs - DVI on Radeon HD 7850 [1002:6819]

1033908 - Test case failure: Multihead - Large Desktop on Radeon HD 7850 [1002:6819]

1033910 - Test case failure: Panning on Radeon HD 7850 [1002:6819]

1033911 - Test case failure: Screen - Change Monitors on Radeon HD 7850 [1002:6819]

1034497 - Test case failure: KMS - Log out after suspend/resume on AMD/ATI Kaveri [1002:1304]

1036792 - PXE boot 5-10x slower in RHEL due to invalid guest state emulation

1064059 - clock_nanosleep returns early with TIMER_ABSTIME

1076738 - No RHGB on some new ATI hardware

1076769 - Test case failure: KMS - Log out after suspend/resume on ATI Pitcairn PRO [Radeon HD 7850] [1002:6819]

1144897 - CVE-2014-3647 kernel: kvm: noncanonical rip after emulation

1163762 - CVE-2010-5313 CVE-2014-7842 kernel: kvm: reporting emulation failures to userspace

1177260 - CVE-2014-9419 kernel: partial ASLR bypass through TLS base addresses leak

1182243 - partition scan in losetup does not succeed when bound repeatedly

1184155 - Dynamic tickless feature not working in RHEL7 KVM guest

1185469 - CVE-2013-7421 Linux kernel: crypto api unprivileged arbitrary module load via request_module()

1186112 - [thinkpad] Support the Lenovo early 2015 models touchpad (X1 Carbon 3rd, T450, W541)

1186448 - CVE-2015-0239 kernel: kvm: insufficient sysenter emulation when invoked from 16-bit code

1190546 - CVE-2014-9644 Linux kernel: crypto api unprivileged arbitrary module load via request_module()

1191604 - DM RAID - Add support for 'raid0' mappings to device-mapper raid target

1198109 - CVE-2014-8171 kernel: memcg: OOM handling DoS

1205258 - Busy loop in recv(MSG_PEEK|MSG_WAITALL)

1206198 - Intel 9-series PCH chipset ACS quirks

1209367 - CVE-2015-2925 Kernel: vfs: Do not allow escaping from bind mounts

1214030 - CVE-2015-3339 kernel: race condition between chown() and execve()

1218454 - CVE-2015-6526 kernel: perf on ppc64 can loop forever getting userlevel stacktraces

1218879 - CVE-2015-4170 kernel: pty layer race condition on tty ldisc shutdown.

1243998 - CVE-2015-7837 kernel: securelevel disabled after kexec [rhel-7.2]

1249107 - [targetcli] cannot discover iSCSI target with IPv6

1251331 - Lenovo W541 Xorg freezes when mini display port cable is plugged in - 3.10.0-267.el7 WARNING: at drivers/gpu/drm/drm_dp_mst_topology.c:1272 process_single_tx_qlock+0x4b6/0x540 [drm_kms_helper]()

1257528 - CVE-2015-5283 kernel: Creating multiple sockets when SCTP module isn't loaded leads to kernel panic

1268270 - CVE-2015-7613 kernel: Unauthorized access to IPC objects with SysV shm

1272472 - CVE-2015-7837 kernel: securelevel disabled after kexec

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

kernel-3.10.0-327.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-327.el7.noarch.rpm

kernel-doc-3.10.0-327.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-327.el7.x86_64.rpm

kernel-debug-3.10.0-327.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debug-devel-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.el7.x86_64.rpm

kernel-devel-3.10.0-327.el7.x86_64.rpm

kernel-headers-3.10.0-327.el7.x86_64.rpm

kernel-tools-3.10.0-327.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-tools-libs-3.10.0-327.el7.x86_64.rpm

perf-3.10.0-327.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.el7.x86_64.rpm

python-perf-3.10.0-327.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.el7.x86_64.rpm

 

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

 

x86_64:

kernel-debug-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-327.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.el7.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

kernel-3.10.0-327.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-327.el7.noarch.rpm

kernel-doc-3.10.0-327.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-327.el7.x86_64.rpm

kernel-debug-3.10.0-327.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debug-devel-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.el7.x86_64.rpm

kernel-devel-3.10.0-327.el7.x86_64.rpm

kernel-headers-3.10.0-327.el7.x86_64.rpm

kernel-tools-3.10.0-327.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-tools-libs-3.10.0-327.el7.x86_64.rpm

perf-3.10.0-327.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.el7.x86_64.rpm

python-perf-3.10.0-327.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.el7.x86_64.rpm

 

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

 

x86_64:

kernel-debug-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-327.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.el7.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

kernel-3.10.0-327.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-327.el7.noarch.rpm

kernel-doc-3.10.0-327.el7.noarch.rpm

 

ppc64:

kernel-3.10.0-327.el7.ppc64.rpm

kernel-bootwrapper-3.10.0-327.el7.ppc64.rpm

kernel-debug-3.10.0-327.el7.ppc64.rpm

kernel-debug-debuginfo-3.10.0-327.el7.ppc64.rpm

kernel-debug-devel-3.10.0-327.el7.ppc64.rpm

kernel-debuginfo-3.10.0-327.el7.ppc64.rpm

kernel-debuginfo-common-ppc64-3.10.0-327.el7.ppc64.rpm

kernel-devel-3.10.0-327.el7.ppc64.rpm

kernel-headers-3.10.0-327.el7.ppc64.rpm

kernel-tools-3.10.0-327.el7.ppc64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.ppc64.rpm

kernel-tools-libs-3.10.0-327.el7.ppc64.rpm

perf-3.10.0-327.el7.ppc64.rpm

perf-debuginfo-3.10.0-327.el7.ppc64.rpm

python-perf-3.10.0-327.el7.ppc64.rpm

python-perf-debuginfo-3.10.0-327.el7.ppc64.rpm

 

ppc64le:

kernel-3.10.0-327.el7.ppc64le.rpm

kernel-bootwrapper-3.10.0-327.el7.ppc64le.rpm

kernel-debug-3.10.0-327.el7.ppc64le.rpm

kernel-debug-debuginfo-3.10.0-327.el7.ppc64le.rpm

kernel-debuginfo-3.10.0-327.el7.ppc64le.rpm

kernel-debuginfo-common-ppc64le-3.10.0-327.el7.ppc64le.rpm

kernel-devel-3.10.0-327.el7.ppc64le.rpm

kernel-headers-3.10.0-327.el7.ppc64le.rpm

kernel-tools-3.10.0-327.el7.ppc64le.rpm

kernel-tools-debuginfo-3.10.0-327.el7.ppc64le.rpm

kernel-tools-libs-3.10.0-327.el7.ppc64le.rpm

perf-3.10.0-327.el7.ppc64le.rpm

perf-debuginfo-3.10.0-327.el7.ppc64le.rpm

python-perf-3.10.0-327.el7.ppc64le.rpm

python-perf-debuginfo-3.10.0-327.el7.ppc64le.rpm

 

s390x:

kernel-3.10.0-327.el7.s390x.rpm

kernel-debug-3.10.0-327.el7.s390x.rpm

kernel-debug-debuginfo-3.10.0-327.el7.s390x.rpm

kernel-debug-devel-3.10.0-327.el7.s390x.rpm

kernel-debuginfo-3.10.0-327.el7.s390x.rpm

kernel-debuginfo-common-s390x-3.10.0-327.el7.s390x.rpm

kernel-devel-3.10.0-327.el7.s390x.rpm

kernel-headers-3.10.0-327.el7.s390x.rpm

kernel-kdump-3.10.0-327.el7.s390x.rpm

kernel-kdump-debuginfo-3.10.0-327.el7.s390x.rpm

kernel-kdump-devel-3.10.0-327.el7.s390x.rpm

perf-3.10.0-327.el7.s390x.rpm

perf-debuginfo-3.10.0-327.el7.s390x.rpm

python-perf-3.10.0-327.el7.s390x.rpm

python-perf-debuginfo-3.10.0-327.el7.s390x.rpm

 

x86_64:

kernel-3.10.0-327.el7.x86_64.rpm

kernel-debug-3.10.0-327.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debug-devel-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.el7.x86_64.rpm

kernel-devel-3.10.0-327.el7.x86_64.rpm

kernel-headers-3.10.0-327.el7.x86_64.rpm

kernel-tools-3.10.0-327.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-tools-libs-3.10.0-327.el7.x86_64.rpm

perf-3.10.0-327.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.el7.x86_64.rpm

python-perf-3.10.0-327.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.el7.x86_64.rpm

 

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

 

ppc64:

kernel-debug-debuginfo-3.10.0-327.el7.ppc64.rpm

kernel-debuginfo-3.10.0-327.el7.ppc64.rpm

kernel-debuginfo-common-ppc64-3.10.0-327.el7.ppc64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.ppc64.rpm

kernel-tools-libs-devel-3.10.0-327.el7.ppc64.rpm

perf-debuginfo-3.10.0-327.el7.ppc64.rpm

python-perf-debuginfo-3.10.0-327.el7.ppc64.rpm

 

ppc64le:

kernel-debug-debuginfo-3.10.0-327.el7.ppc64le.rpm

kernel-debug-devel-3.10.0-327.el7.ppc64le.rpm

kernel-debuginfo-3.10.0-327.el7.ppc64le.rpm

kernel-debuginfo-common-ppc64le-3.10.0-327.el7.ppc64le.rpm

kernel-tools-debuginfo-3.10.0-327.el7.ppc64le.rpm

kernel-tools-libs-devel-3.10.0-327.el7.ppc64le.rpm

perf-debuginfo-3.10.0-327.el7.ppc64le.rpm

python-perf-debuginfo-3.10.0-327.el7.ppc64le.rpm

 

x86_64:

kernel-debug-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-327.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.el7.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

kernel-3.10.0-327.el7.src.rpm

 

noarch:

kernel-abi-whitelists-3.10.0-327.el7.noarch.rpm

kernel-doc-3.10.0-327.el7.noarch.rpm

 

x86_64:

kernel-3.10.0-327.el7.x86_64.rpm

kernel-debug-3.10.0-327.el7.x86_64.rpm

kernel-debug-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debug-devel-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.el7.x86_64.rpm

kernel-devel-3.10.0-327.el7.x86_64.rpm

kernel-headers-3.10.0-327.el7.x86_64.rpm

kernel-tools-3.10.0-327.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-tools-libs-3.10.0-327.el7.x86_64.rpm

perf-3.10.0-327.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.el7.x86_64.rpm

python-perf-3.10.0-327.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.el7.x86_64.rpm

 

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

 

x86_64:

kernel-debug-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-debuginfo-common-x86_64-3.10.0-327.el7.x86_64.rpm

kernel-tools-debuginfo-3.10.0-327.el7.x86_64.rpm

kernel-tools-libs-devel-3.10.0-327.el7.x86_64.rpm

perf-debuginfo-3.10.0-327.el7.x86_64.rpm

python-perf-debuginfo-3.10.0-327.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-2010-5313

https://access.redhat.com/security/cve/CVE-2013-7421

https://access.redhat.com/security/cve/CVE-2014-3647

https://access.redhat.com/security/cve/CVE-2014-7842

https://access.redhat.com/security/cve/CVE-2014-8171

https://access.redhat.com/security/cve/CVE-2014-9419

https://access.redhat.com/security/cve/CVE-2014-9644

https://access.redhat.com/security/cve/CVE-2015-0239

https://access.redhat.com/security/cve/CVE-2015-2925

https://access.redhat.com/security/cve/CVE-2015-3339

https://access.redhat.com/security/cve/CVE-2015-4170

https://access.redhat.com/security/cve/CVE-2015-5283

https://access.redhat.com/security/cve/CVE-2015-6526

https://access.redhat.com/security/cve/CVE-2015-7613

https://access.redhat.com/security/cve/CVE-2015-7837

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

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html-single/7.2_Release_Notes/index.html

https://access.redhat.com/articles/1749293

 

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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