Ranjivosti jezgre operacijskog sustava

—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA1

=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: kernel security, bug fix, and enhancement update
Advisory ID: RHSA-2015:1272-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1272.html
Issue date: 2015-07-22
Updated on: 2015-01-12
CVE Names: CVE-2014-3184 CVE-2014-3940 CVE-2014-4652
CVE-2014-8133 CVE-2014-8709 CVE-2014-9683
CVE-2015-0239 CVE-2015-3339
=====================================================================

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 6.
This is the seventh regular update.

Red Hat Product Security has rated this update as having Moderate 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 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.

* A flaw was found in the way Linux kernel’s Transparent Huge Pages (THP)
implementation handled non-huge page migration. A local, unprivileged user
could use this flaw to crash the kernel by migrating transparent hugepages.
(CVE-2014-3940, Moderate)

* A buffer overflow flaw was found in the way the Linux kernel’s eCryptfs
implementation decoded encrypted file names. A local, unprivileged user
could use this flaw to crash the system or, potentially, escalate their
privileges on the system. (CVE-2014-9683, Moderate)

* A race condition flaw was found between the chown and execve system
calls. When changing the owner of a setuid user binary to root, the race
condition could momentarily make the binary setuid root. A local,
unprivileged user could potentially use this flaw to escalate their
privileges on the system. (CVE-2015-3339, Moderate)

* Multiple out-of-bounds write flaws were found in the way the Cherry
Cymotion keyboard driver, KYE/Genius device drivers, Logitech device
drivers, Monterey Genius KB29E keyboard driver, Petalynx Maxter remote
control driver, and Sunplus wireless desktop driver handled HID reports
with an invalid report descriptor size. An attacker with physical access to
the system could use either of these flaws to write data past an allocated
memory buffer. (CVE-2014-3184, Low)

* An information leak flaw was found in the way the Linux kernel’s Advanced
Linux Sound Architecture (ALSA) implementation handled access of the user
control’s state. A local, privileged user could use this flaw to leak
kernel memory to user space. (CVE-2014-4652, Low)

* It was found that the espfix functionality could be bypassed by
installing a 16-bit RW data segment into GDT instead of LDT (which espfix
checks), and using that segment on the stack. A local, unprivileged user
could potentially use this flaw to leak kernel stack addresses.
(CVE-2014-8133, Low)

* An information leak flaw was found in the Linux kernel’s IEEE 802.11
wireless networking implementation. When software encryption was used, a
remote attacker could use this flaw to leak up to 8 bytes of plaintext.
(CVE-2014-8709, 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)

Red Hat would like to thank Andy Lutomirski for reporting the CVE-2014-8133
issue, and Nadav Amit for reporting the CVE-2015-0239 issue.

This update fixes several hundred bugs and adds numerous enhancements.
Refer to the Red Hat Enterprise Linux 6.7 Release Notes for information on
the most significant of these changes, and the following Knowledgebase
article for further information:

https://access.redhat.com/articles/1466073

All kernel users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues and add these
enhancements. 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/):

734360 – “opcontrol –deinit” cause kernel panic inside guest os.
840708 – misleading (typo) print for “max_report_luns”
986761 – guest kernel will print many “serial8250: too much work for irq3” when using kvm with isa-serial
1025868 – kernel panic when installing RHEL4 with Opteron G3 CPU model
1066702 – Hugepage allocations hang on numa nodes with insufficient memory
1104097 – CVE-2014-3940 Kernel: missing check during hugepage migration
1113406 – CVE-2014-4652 Kernel: ALSA: control: protect user controls against races & memory disclosure
1115545 – NFS4: remove incorrect “Lock reclaim failed!” warning when delegations are used
1116398 – RHEV-H crashes and reboots when ksmd (MOM) is enabled
1141391 – CVE-2014-3184 Kernel: HID: off by one error in various _report_fixup routines
1144128 – FUSE: Scheduling while atomic OOPSes when using inval_entry
1145751 – kvm_clock lacks protection against tsc going backwards
1150510 – kernel ignores ACPI memory devices (PNP0C80) present at boot time
1156661 – Kernel crash when unmounting Ext4 filesystem
1171317 – xfs may crash after unmount if a log write is delayed
1172797 – CVE-2014-8133 kernel: x86: espfix(64) bypass via set_thread_area and CLONE_SETTLS
1173580 – CVE-2014-8709 kernel: net: mac80211: plain text information leak
1183773 – clock_event_device:min_delta_ns can overflow and can never go down
1186448 – CVE-2015-0239 kernel: kvm: insufficient sysenter emulation when invoked from 16-bit code
1187940 – Regression: Loading memory mapped files does not use the optimal sized (large) I/O any more in kernel 2.6.32-504.3.3.el6.x86_64
1193830 – CVE-2014-9683 kernel: buffer overflow in eCryptfs
1196319 – Backport the dm-switch target to RHEL 6
1200541 – Reset socket ignored when socket state is LAST-ACK and connection state is SYN-SENT
1208065 – O_TRUNC ignored on NFS file with invalid cache entry
1214030 – CVE-2015-3339 kernel: race condition between chown() and execve()

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
kernel-2.6.32-573.el6.src.rpm

i386:
kernel-2.6.32-573.el6.i686.rpm
kernel-debug-2.6.32-573.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.el6.i686.rpm
kernel-debug-devel-2.6.32-573.el6.i686.rpm
kernel-debuginfo-2.6.32-573.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-573.el6.i686.rpm
kernel-devel-2.6.32-573.el6.i686.rpm
kernel-headers-2.6.32-573.el6.i686.rpm
perf-2.6.32-573.el6.i686.rpm
perf-debuginfo-2.6.32-573.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.el6.i686.rpm

noarch:
kernel-abi-whitelists-2.6.32-573.el6.noarch.rpm
kernel-doc-2.6.32-573.el6.noarch.rpm
kernel-firmware-2.6.32-573.el6.noarch.rpm

x86_64:
kernel-2.6.32-573.el6.x86_64.rpm
kernel-debug-2.6.32-573.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-573.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-573.el6.x86_64.rpm
kernel-debug-devel-2.6.32-573.el6.i686.rpm
kernel-debug-devel-2.6.32-573.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.el6.i686.rpm
kernel-debuginfo-2.6.32-573.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-573.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.el6.x86_64.rpm
kernel-devel-2.6.32-573.el6.x86_64.rpm
kernel-headers-2.6.32-573.el6.x86_64.rpm
perf-2.6.32-573.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.el6.i686.rpm
perf-debuginfo-2.6.32-573.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.el6.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

i386:
kernel-debug-debuginfo-2.6.32-573.el6.i686.rpm
kernel-debuginfo-2.6.32-573.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-573.el6.i686.rpm
perf-debuginfo-2.6.32-573.el6.i686.rpm
python-perf-2.6.32-573.el6.i686.rpm
python-perf-debuginfo-2.6.32-573.el6.i686.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-573.el6.x86_64.rpm
kernel-debuginfo-2.6.32-573.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-573.el6.x86_64.rpm
perf-debuginfo-2.6.32-573.el6.x86_64.rpm
python-perf-2.6.32-573.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-573.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
kernel-2.6.32-573.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-573.el6.noarch.rpm
kernel-doc-2.6.32-573.el6.noarch.rpm
kernel-firmware-2.6.32-573.el6.noarch.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Red Hat Enterprise Linux Server (v. 6):

Source:
kernel-2.6.32-573.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-573.el6.noarch.rpm
kernel-doc-2.6.32-573.el6.noarch.rpm
kernel-firmware-2.6.32-573.el6.noarch.rpm

ppc64:
kernel-2.6.32-573.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-573.el6.ppc64.rpm
kernel-debug-2.6.32-573.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-573.el6.ppc64.rpm
kernel-debug-devel-2.6.32-573.el6.ppc64.rpm
kernel-debuginfo-2.6.32-573.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-573.el6.ppc64.rpm
kernel-devel-2.6.32-573.el6.ppc64.rpm
kernel-headers-2.6.32-573.el6.ppc64.rpm
perf-2.6.32-573.el6.ppc64.rpm
perf-debuginfo-2.6.32-573.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-573.el6.ppc64.rpm

s390x:
kernel-2.6.32-573.el6.s390x.rpm
kernel-debug-2.6.32-573.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-573.el6.s390x.rpm
kernel-debug-devel-2.6.32-573.el6.s390x.rpm
kernel-debuginfo-2.6.32-573.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-573.el6.s390x.rpm
kernel-devel-2.6.32-573.el6.s390x.rpm
kernel-headers-2.6.32-573.el6.s390x.rpm
kernel-kdump-2.6.32-573.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-573.el6.s390x.rpm
kernel-kdump-devel-2.6.32-573.el6.s390x.rpm
perf-2.6.32-573.el6.s390x.rpm
perf-debuginfo-2.6.32-573.el6.s390x.rpm
python-perf-debuginfo-2.6.32-573.el6.s390x.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

ppc64:
kernel-debug-debuginfo-2.6.32-573.el6.ppc64.rpm
kernel-debuginfo-2.6.32-573.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-573.el6.ppc64.rpm
perf-debuginfo-2.6.32-573.el6.ppc64.rpm
python-perf-2.6.32-573.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-573.el6.ppc64.rpm

s390x:
kernel-debug-debuginfo-2.6.32-573.el6.s390x.rpm
kernel-debuginfo-2.6.32-573.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-573.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-573.el6.s390x.rpm
perf-debuginfo-2.6.32-573.el6.s390x.rpm
python-perf-2.6.32-573.el6.s390x.rpm
python-perf-debuginfo-2.6.32-573.el6.s390x.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
kernel-2.6.32-573.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-573.el6.noarch.rpm
kernel-doc-2.6.32-573.el6.noarch.rpm
kernel-firmware-2.6.32-573.el6.noarch.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

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-2014-3184
https://access.redhat.com/security/cve/CVE-2014-3940
https://access.redhat.com/security/cve/CVE-2014-4652
https://access.redhat.com/security/cve/CVE-2014-8133
https://access.redhat.com/security/cve/CVE-2014-8709
https://access.redhat.com/security/cve/CVE-2014-9683
https://access.redhat.com/security/cve/CVE-2015-0239
https://access.redhat.com/security/cve/CVE-2015-3339
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/articles/1466073

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

iD8DBQFVrzTRXlSAg2UNWIIRAuMoAKCdM22Fjbq4liPP0n4IrSdD0uZG/wCfcBZ7
AuD0gbXmegcZfF4suxZ4rwo=
=XJDi
—–END PGP SIGNATURE—–

—
Enterprise-watch-list mailing list
Enterprise-watch-list@redhat.com
https://www.redhat.com/mailman/listinfo/enterprise-watch-list
7e

Ranjivosti jezgre operacijskog sustava

Archives

More in Preporuke

Sigurnosni nedostaci programskog paketa wireshark