Sicherheit: Mehrere Probleme in RT-Preempt-Realtime-Patch
||Mehrere Probleme in RT-Preempt-Realtime-Patch
||Red Hat Enterprise MRG for RHEL-6
||Fr, 26. Mai 2017, 07:01
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Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2017:1297-01
Product: Red Hat Enterprise MRG for RHEL-6
Advisory URL: https://access.redhat.com/errata/RHSA-2017:1297
Issue date: 2017-05-25
CVE Names: CVE-2016-10208 CVE-2016-7910 CVE-2016-8646
An update for kernel-rt is now available for Red Hat Enterprise MRG 2.
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
The kernel-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.
* It was found that the packet_set_ring() function of the Linux kernel's
networking implementation did not properly validate certain block-size
data. A local attacker with CAP_NET_RAW capability could use this flaw to
trigger a buffer overflow, resulting in the crash of the system. Due to the
nature of the flaw, privilege escalation cannot be fully ruled out.
* Mounting a crafted EXT4 image read-only leads to an attacker controlled
memory corruption and SLAB-Out-of-Bounds reads. (CVE-2016-10208, Moderate)
* A flaw was found in the Linux kernel's implementation of seq_file where a
local attacker could manipulate memory in the put() function pointer. This
could lead to memory corruption and possible privileged escalation.
* A vulnerability was found in the Linux kernel. An unprivileged local user
could trigger oops in shash_async_export() by attempting to force the
in-kernel hashing algorithms into decrypting an empty data set.
Red Hat would like to thank Igor Redko (Virtuozzo kernel team) for
* The kernel-rt packages have been upgraded to the 3.10.0-514 source tree,
which provides a number of bug fixes over the previous version.
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
The system must be rebooted for this update to take effect.
5. Bugs fixed (https://bugzilla.redhat.com/):
1388821 - CVE-2016-8646 kernel: Oops in shash_async_export()
1395190 - CVE-2016-10208 kernel: EXT4 memory corruption / SLAB out-of-bounds
1399727 - CVE-2016-7910 kernel: Use after free in seq file
1437404 - CVE-2017-7308 kernel: net/packet: overflow in check for priv area
1440807 - update the MRG 2.5.z 3.10 kernel-rt sources
6. Package List:
MRG Realtime for RHEL 6 Server v.2:
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <email@example.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2017 Red Hat, Inc.
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