First published: Tue Oct 09 2018(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4 and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a denial of service on the system. (CVE-2018-5391)</li> <li> kernel: Integer overflow in Linux's create_elf_tables function (CVE-2018-14634)</li> 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.<br>Red Hat would like to thank Juha-Matti Tilli (Aalto University - Department of Communications and Networking and Nokia Bell Labs) for reporting CVE-2018-5391 and Qualys Research Labs for reporting CVE-2018-14634.<br>Bug Fix(es):<br>These updated kernel packages include also numerous bug fixes. Space precludes documenting all of the bug fixes in this advisory. See the descriptions in the related Knowledge Article:<br><a href="https://access.redhat.com/articles/3635371" target="_blank">https://access.redhat.com/articles/3635371</a>
Affected Software | Affected Version | How to fix |
---|---|---|
redhat/kernel | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-abi-whitelists | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debug | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debug-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debug-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debug-devel | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debug-devel | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debuginfo-common-i686 | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-devel | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-doc | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-firmware | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-headers | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/perf | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/perf-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/perf-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/python-perf | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/python-perf-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/python-perf-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debug | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-devel | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-headers | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/perf | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/python-perf | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debuginfo-common-s390x | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-kdump | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-kdump-debuginfo | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-kdump-devel | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-bootwrapper | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
redhat/kernel-debuginfo-common-ppc64 | <2.6.32-754.6.3.el6 | 2.6.32-754.6.3.el6 |
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The severity of RHSA-2018:2846 is considered important due to the potential for remote exploitation via fragmented packet handling.
To fix RHSA-2018:2846, update your kernel package to version 2.6.32-754.6.3.el6 or higher.
RHSA-2018:2846 addresses a flaw named FragmentSmack in the Linux kernel related to the reassembly of fragmented IPv4 and IPv6 packets.
RHSA-2018:2846 affects systems running the Red Hat kernel version up to 2.6.32-754.6.3.el6.
Manual intervention is required to update the kernel packages to mitigate the vulnerability described in RHSA-2018:2846.