4.6 - RHSA-2019:2566

Problem Description:

An update for kernel is now available for Red Hat Enterprise Linux 7.5 Extended Update Support.

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:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.5) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.5) - ppc64, ppc64le, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members (CVE-2018-13405)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

* [Dell EMC 7.6 BUG] File system corrupting with I/O Stress on H330 PERC on AMD Systems (BZ#1698337)

* [RHEL7.7] Refined TSC clocksource calibration occasionally fails on some SkyLake-X servers (BZ#1719780)

* Poor system performance from thundering herd of kworkers competing for mddev->flush_bio ownership (BZ#1721533)

* fragmented packets timing out (BZ#1729412)

* After update to RHEL 7.6 (3.10.0-957.1.3.el7.x86_64) from 7.4, customer has experienced multiple panics in kernel at BUG at drivers/iommu/iova.c:859! (BZ#1731299)

* kernel build: speed up debuginfo extraction (BZ#1731463)

Enhancement(s):

* [Intel 7.6 FEAT] Graphics Kernel Driver v4.15 updates (BZ#1716309)

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/):

1599161 - CVE-2018-13405 kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members