drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in RT-Preempt-Realtime-Patch
Name: |
Zwei Probleme in RT-Preempt-Realtime-Patch |
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ID: |
RHSA-2016:2107-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise MRG for RHEL-6 |
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Datum: |
Mi, 26. Oktober 2016, 19:19 |
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Referenzen: |
https://access.redhat.com/security/vulnerabilities/2706661
https://access.redhat.com/security/cve/CVE-2016-5195
https://access.redhat.com/security/cve/CVE-2016-7039 |
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Applikationen: |
RT-Preempt-Realtime-Patch |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel-rt security update Advisory ID: RHSA-2016:2107-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-2107.html Issue date: 2016-10-26 CVE Names: CVE-2016-5195 CVE-2016-7039 =====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise MRG 2.5.
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:
MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64
3. Description:
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system. (CVE-2016-5195, Important)
* Linux kernel built with the 802.1Q/802.1ad VLAN(CONFIG_VLAN_8021Q) OR Virtual eXtensible Local Area Network(CONFIG_VXLAN) with Transparent Ethernet Bridging(TEB) GRO support, is vulnerable to a stack overflow issue. It could occur while receiving large packets via GRO path; As an unlimited recursion could unfold in both VLAN and TEB modules, leading to a stack corruption in the kernel. (CVE-2016-7039, Important)
Red Hat would like to thank Phil Oester for reporting CVE-2016-5195.
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/):
1375944 - CVE-2016-7039 kernel: remotely triggerable unbounded recursion in the vlan gro code leading to a kernel crash 1384344 - CVE-2016-5195 kernel: mm: privilege escalation via MAP_PRIVATE COW breakage
6. Package List:
MRG Realtime for RHEL 6 Server v.2:
Source: kernel-rt-3.10.0-327.rt56.198.el6rt.src.rpm
noarch: kernel-rt-doc-3.10.0-327.rt56.198.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-327.rt56.198.el6rt.noarch.rpm
x86_64: kernel-rt-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-327.rt56.198.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-327.rt56.198.el6rt.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-2016-5195 https://access.redhat.com/security/cve/CVE-2016-7039 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/2706661
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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