Sigurnosni nedostaci jezgre operacijskog sustava

—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA256

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

Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2018:2164-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:2164
Issue date: 2018-07-10
CVE Names: CVE-2018-3639 CVE-2018-3665 CVE-2018-10675
CVE-2018-10872
=====================================================================

1. Summary:

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):

* An industry-wide issue was found in the way many modern microprocessor
designs have implemented speculative execution of Load & Store instructions
(a commonly used performance optimization). It relies on the presence of a
precisely-defined instruction sequence in the privileged code as well as
the fact that memory read from address to which a recent memory write has
occurred may see an older value and subsequently cause an update into the
microprocessor’s data cache even for speculatively executed instructions
that never actually commit (retire). As a result, an unprivileged attacker
could use this flaw to read privileged memory by conducting targeted cache
side-channel attacks. (CVE-2018-3639, x86 AMD)

* kernel: Use-after-free vulnerability in mm/mempolicy.c:do_get_mempolicy
function allows local denial of service or other unspecified impact
(CVE-2018-10675)

* Kernel: FPU state information leakage via lazy FPU restore
(CVE-2018-3665)

* kernel: error in exception handling leads to DoS (CVE-2018-8897
regression) (CVE-2018-10872)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

Red Hat would like to thank Ken Johnson (Microsoft Security Response
Center) and Jann Horn (Google Project Zero) for reporting CVE-2018-3639 and
Julian Stecklina (Amazon.de), Thomas Prescher (cyberus-technology.de), and
Zdenek Sojka (sysgo.com) for reporting CVE-2018-3665.

Bug Fix(es):

* Previously, microcode updates on 32 and 64-bit AMD and Intel
architectures were not synchronized. As a consequence, it was not possible
to apply the microcode updates. This fix adds the synchronization to the
microcode updates so that processors of the stated architectures receive
updates at the same time. As a result, microcode updates are now
synchronized. (BZ#1574592)

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/):

1566890 – CVE-2018-3639 hw: cpu: speculative store bypass
1575065 – CVE-2018-10675 kernel: Use-after-free vulnerability in mm/mempolicy.c:do_get_mempolicy function allows local denial-of-service or other unspecified impact
1585011 – CVE-2018-3665 Kernel: FPU state information leakage via lazy FPU restore
1596094 – CVE-2018-10872 kernel: error in exception handling leads to DoS (CVE-2018-8897 regression)

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
kernel-2.6.32-754.2.1.el6.src.rpm

i386:
kernel-2.6.32-754.2.1.el6.i686.rpm
kernel-debug-2.6.32-754.2.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.2.1.el6.i686.rpm
kernel-debug-devel-2.6.32-754.2.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.2.1.el6.i686.rpm
kernel-devel-2.6.32-754.2.1.el6.i686.rpm
kernel-headers-2.6.32-754.2.1.el6.i686.rpm
perf-2.6.32-754.2.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.2.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.i686.rpm

noarch:
kernel-abi-whitelists-2.6.32-754.2.1.el6.noarch.rpm
kernel-doc-2.6.32-754.2.1.el6.noarch.rpm
kernel-firmware-2.6.32-754.2.1.el6.noarch.rpm

x86_64:
kernel-2.6.32-754.2.1.el6.x86_64.rpm
kernel-debug-2.6.32-754.2.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-754.2.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.2.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-754.2.1.el6.i686.rpm
kernel-debug-devel-2.6.32-754.2.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-754.2.1.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.2.1.el6.x86_64.rpm
kernel-devel-2.6.32-754.2.1.el6.x86_64.rpm
kernel-headers-2.6.32-754.2.1.el6.x86_64.rpm
perf-2.6.32-754.2.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.2.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.2.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.x86_64.rpm

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

i386:
kernel-debug-debuginfo-2.6.32-754.2.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.2.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.2.1.el6.i686.rpm
python-perf-2.6.32-754.2.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.i686.rpm

x86_64:
kernel-debug-debuginfo-2.6.32-754.2.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.2.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.2.1.el6.x86_64.rpm
python-perf-2.6.32-754.2.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.x86_64.rpm

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

Source:
kernel-2.6.32-754.2.1.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-754.2.1.el6.noarch.rpm
kernel-doc-2.6.32-754.2.1.el6.noarch.rpm
kernel-firmware-2.6.32-754.2.1.el6.noarch.rpm

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

Red Hat Enterprise Linux Server (v. 6):

Source:
kernel-2.6.32-754.2.1.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-754.2.1.el6.noarch.rpm
kernel-doc-2.6.32-754.2.1.el6.noarch.rpm
kernel-firmware-2.6.32-754.2.1.el6.noarch.rpm

ppc64:
kernel-2.6.32-754.2.1.el6.ppc64.rpm
kernel-bootwrapper-2.6.32-754.2.1.el6.ppc64.rpm
kernel-debug-2.6.32-754.2.1.el6.ppc64.rpm
kernel-debug-debuginfo-2.6.32-754.2.1.el6.ppc64.rpm
kernel-debug-devel-2.6.32-754.2.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-754.2.1.el6.ppc64.rpm
kernel-devel-2.6.32-754.2.1.el6.ppc64.rpm
kernel-headers-2.6.32-754.2.1.el6.ppc64.rpm
perf-2.6.32-754.2.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-754.2.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.ppc64.rpm

s390x:
kernel-2.6.32-754.2.1.el6.s390x.rpm
kernel-debug-2.6.32-754.2.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-754.2.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-754.2.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-754.2.1.el6.s390x.rpm
kernel-devel-2.6.32-754.2.1.el6.s390x.rpm
kernel-headers-2.6.32-754.2.1.el6.s390x.rpm
kernel-kdump-2.6.32-754.2.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-754.2.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-754.2.1.el6.s390x.rpm
perf-2.6.32-754.2.1.el6.s390x.rpm
perf-debuginfo-2.6.32-754.2.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.s390x.rpm

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

ppc64:
kernel-debug-debuginfo-2.6.32-754.2.1.el6.ppc64.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.ppc64.rpm
kernel-debuginfo-common-ppc64-2.6.32-754.2.1.el6.ppc64.rpm
perf-debuginfo-2.6.32-754.2.1.el6.ppc64.rpm
python-perf-2.6.32-754.2.1.el6.ppc64.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.ppc64.rpm

s390x:
kernel-debug-debuginfo-2.6.32-754.2.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-754.2.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-754.2.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-754.2.1.el6.s390x.rpm
perf-debuginfo-2.6.32-754.2.1.el6.s390x.rpm
python-perf-2.6.32-754.2.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-754.2.1.el6.s390x.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
kernel-2.6.32-754.2.1.el6.src.rpm

noarch:
kernel-abi-whitelists-2.6.32-754.2.1.el6.noarch.rpm
kernel-doc-2.6.32-754.2.1.el6.noarch.rpm
kernel-firmware-2.6.32-754.2.1.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-2018-3639
https://access.redhat.com/security/cve/CVE-2018-3665
https://access.redhat.com/security/cve/CVE-2018-10675
https://access.redhat.com/security/cve/CVE-2018-10872
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
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=I9wq
—–END PGP SIGNATURE—–

—
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce

Sigurnosni nedostaci jezgre operacijskog sustava

Archives

More in Preporuke

Sigurnosni nedostaci jezgre operacijskog sustava