RHSA-2018:3540: Important: kernel security, bug fix, and enhancement update

First published: Tue Nov 13 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: out-of-bounds access in the show_timer function in kernel/time/posix-timers.c (CVE-2017-18344)</li> <li> kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact (CVE-2018-10675)</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: <a href="https://access.redhat.com/articles/3684891" target="_blank">https://access.redhat.com/articles/3684891</a>

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

• agent/severity
• agent/type
• agent/softwarecombine
• agent/weakness
• agent/last-modified-date
• agent/first-publish-date
• agent/title
• agent/remedy
• agent/references
• agent/description
• collector/redhat-errata
• source/Red Hat
• anchor-id/RHSA-2018:3540
• agent/software-canonical-lookup
• agent/event
• agent/trending
• agent/tags
• agent/source
• package-manager/redhat