RHEL 7 : kernel-rt (RHSA-2017:2585)
Medium Nessus Plugin ID 102971
SynopsisThe remote Red Hat host is missing one or more security updates.
DescriptionAn update for kernel-rt is now available for Red Hat Enterprise Linux 7.
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.
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 Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data, which may lead to the privilege escalation.
Red Hat would like to thank Leilei Lin (Alibaba Group), Fan Wu (The University of Hong Kong), and Shixiong Zhao (The University of Hong Kong) for reporting this issue.
Bug Fix(es) :
* The kernel-rt packages have been upgraded to the 3.10.0-693.2.1 source tree, which provides a number of bug fixes over the previous version. (BZ# 1473393) (BZ#1473393)
SolutionUpdate the affected packages.