RHSA-2020:0543: Important: kernel security, bug fix, and enhancement update

First published: Tue Feb 18 2020(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c (CVE-2018-20856)</li> <li> kernel: use-after-free in fs/xfs/xfs_super.c (CVE-2018-20976)</li> <li> kernel: insufficient input validation in kernel mode driver in Intel i915 graphics leads to privilege escalation (CVE-2019-11085)</li> <li> kernel: heap-based buffer overflow in mwifiex_process_country_ie() function in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c (CVE-2019-14895)</li> <li> kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c (CVE-2019-17133)</li> <li> kernel: rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel lacks a certain upper-bound check, leading to a buffer overflow (CVE-2019-17666)</li> <li> kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping (CVE-2019-11599)</li> 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.<br>Bug Fix(es):<br><li> [Hyper-V][RHEL7.6]Hyper-V guest waiting indefinitely for RCU callback when removing a mem cgroup (BZ#1783175)</li> Enhancement(s):<br><li> Selective backport: perf: Sync with upstream v4.16 (BZ#1782751)</li>

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