Synopsis
Important: kernel-rt security and bug fix update
Type/Severity
Security Advisory: Important
Topic
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.
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: use-after-free in fs/xfs/xfs_super.c (CVE-2018-20976)
- kernel: insufficient input validation in kernel mode driver in Intel i915 graphics leads to privilege escalation (CVE-2019-11085)
- kernel: heap-based buffer overflow in mwifiex_process_country_ie() function in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c (CVE-2019-14895)
- kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c (CVE-2019-17133)
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):
- update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1794133)
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
Fixes
- BZ - 1710405 - CVE-2019-11085 kernel: insufficient input validation in kernel mode driver in Intel i915 graphics leads to privilege escalation
- BZ - 1743547 - CVE-2018-20976 kernel: use-after-free in fs/xfs/xfs_super.c
- BZ - 1771909 - CVE-2019-17133 kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c
- BZ - 1774870 - CVE-2019-14895 kernel: heap-based buffer overflow in mwifiex_process_country_ie() function in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
CVEs
References
Vulmon