Synopsis
Important: kernel security and bug fix update
Type/Severity
Security Advisory: Important
Topic
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.
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
- hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)
- 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):
- TCP packets are segmented when sent to the VLAN device when coming from VXLAN dev. (BZ#1732810)
- skb head copy occurs when sending traffic over OVS managed VXLAN tunnel (BZ#1733896)
- [mlx4] VXLAN over VLAN TCP segmentation (BZ#1734306)
- use "make -jN" for modules_install (BZ#1735082)
- Backport TCP follow-up for small buffers (BZ#1739128)
- [FJ7.6 Bug]: [REG] kernel: ipc: ipc_free should use kvfree (BZ#1740176)
- RHEL7.6 - powerpc/pseries: Disable CPU hotplug across migrations / powerpc/rtas: Fix a potential race between CPU-Offline & Migration (LPM) (BZ#1745437)
- RHEL7.6 - powerpc/pseries: Fix unitialized timer reset on migration / powerpc/pseries/mobility: Extend start/stop topology update scope (LPM) (BZ#1745439)
- RHEL7.5 - ISST-LTE:PVM:Zeppelin :LPM: Failure logs and stack trace seen during LPM (POWER9/P9) (BZ#1745447)
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.
Affected Products
-
Red Hat Enterprise Linux Server - Extended Update Support 7.5 x86_64
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.5 s390x
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.5 ppc64
-
Red Hat Enterprise Linux EUS Compute Node 7.5 x86_64
-
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.5 ppc64le
Fixes
- BZ - 1724389 - CVE-2019-1125 kernel: hw: Spectre SWAPGS gadget vulnerability
- BZ - 1727857 - CVE-2019-9506 hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB)
CVEs
References
Vulmon