7.2 - RHSA-2019:2730

Problem Description:

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:

Red Hat MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64

3. Description:

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: Memory corruption due to incorrect socket cloning (CVE-2018-9568)

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

* kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)

* kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence (CVE-2018-16871)

* kernel: hw: Spectre SWAPGS gadget vulnerability (CVE-2019-1125)

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):

* Backport TCP follow-up for small buffers [mrg-r] (BZ#1732110)

* update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1734469)

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 1655162 - CVE-2018-16871 kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence 1655904 - CVE-2018-9568 kernel: Memory corruption due to incorrect socket cloning 1660375 - CVE-2018-16884 kernel: nfs: use-after-free in svc_process_common() 1724389 - CVE-2019-1125 kernel: hw: Spectre SWAPGS gadget vulnerability 1734469 - update the MRG 2.5.z 3.10 realtime-kernel sources