RHSA-2019:1873 Important: kernel security, bug fix and enhancement update

Updated

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

Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Security Fixes are described in RHSA-2019:1873.

This update fixes the following bugs and adds the these enhancements:

  • kmem, memcg: system crash due to cache destruction race (BZ#1691428)

  • THP: Race between MADV_DONTNEED and NUMA hinting node migration code (BZ#1698108)

  • [RHEL7.6] BUG_ON(s->uptodate < disks - 1) condition encountered in RAID6 array with 6 disks and while one disk had failed. (BZ#1698109)

  • [Dell EMC 7.6 BUG] File system corrupting with I/O Stress on H330 PERC on AMD Systems (BZ#1698338)

  • VMs in second level of nested virtualization get completely stuck (BZ#1702172)

  • Backport upstream fixes for AMD MCA issues (BZ#1703376)

  • dm cache metadata: Fix loading discard bitset (BZ#1703586)

  • [LLNL 7.7 Bug] WARNING at include/linux/kref.h:52 hfi1_rcd_get_by_index+0x84/0xa0 [hfi1] (BZ#1705369)

  • [RHEL7] Fix possible Spectre-v1 bugs in wireless code (BZ#1706698)

  • Mistmach between 'tty->termios->c_lflag' and 'ldata->icanon' for 'ICANON' (BZ#1708063)

  • RHEL7.6 - Kernel changes for count cache flush Spectre v2 mitigation (BZ#1708546)

  • [HPEMCS 7.7 REGRESSION] libnvdimm, pmem: Fix badblocks population for 'raw' namespaces (BZ#1708548)

  • netfilter ipv6 ip6_route_me_harder() causes Neighbour Discovery packets to be sent via the wrong interface thereby disrupting basic connectivity (BZ#1709186)

  • [MCHP 7.7 FEAT] Update smartpqi driver to latest upstream (BZ#1709469)

  • RHEL7: rwsem reader/writer mutual exclusion guarantee may not work (BZ#1709704)

  • kernel:unregister_netdevice: waiting for ethX to become free. Usage count = 1 (BZ#1709727)

  • BUG: memory allocation failure in inode_doinit_with_dentry()/context_to_sid() (BZ#1710468)

  • [Azure][RHEL7.6]NVMe failed to allocate memory for I/O during page write back (BZ#1710799)

  • [DELL 7.6 BUG] - "CPU unsupported" message with CFL-H/S 8+2 due to updated Stepping (BZ#1710803)

  • iostat shows false, high utilization for devices with mq request queues under minimal load (BZ#1711013)

  • Backport: rcu: Don't wake rcuc/X kthreads on NOCB CPUs (BZ#1711325)

  • BUG: unable to handle kernel paging request at ffffffffc06191ef on AMD ZEN system (BZ#1712761)

  • [HPE 7.6 Bug] NULL pointer bug during boot on Rome processor system (BZ#1712763)

  • RHEL7.7 - sched/fair: Do not re-read ->h_load_next during hierarchical load calculation (BZ#1712764)

  • AMD Speedway/Ethanol: apparent corruption encountered during build (BZ#1712766)

  • Intermittent packet drops every 15-60 seconds causing RDP connection failures with the RDP if RDP client and server are on a different tenant network (BZ#1713562)

  • Poor system performance from thundering herd of kworkers competing for mddev->flush_bio ownership (BZ#1713564)

  • dm thin metadata: do not write metadata if no changes occurred (BZ#1713800)

  • Link flap / Failover testing an NVMe over RDMA connection leads to kernel crash (BZ#1715320)

  • [debug kernel] [x86_64]INFO: possible circular locking dependency detected (BZ#1715328)

  • RHEL-7.7: tty: termios_rwsem possible deadlock (BZ#1715331)

  • AMD Rome: WARNING: CPU: 1 PID: 0 at arch/x86/kernel/cpu/mcheck/mce.c:1510 mcheck_cpu_init+0x7a/0x460 (BZ#1715868)

  • Enable DTR quirk for Sierra WP7607 modem (1199:68c0) (BZ#1715870)

  • Windows 10 build 1803 install DVD has BSOD when run on KVM with AMD EPYC CPU model (BZ#1716306)

  • [mm] kernel BUG at lib/idr.c:1157, kmemcg_id is -1 when creating or destroying mem cgroups (BZ#1717099)

  • [DELL 7.6 BUG] - "CPU unsupported" message with WHL-U due to updated Stepping (BZ#1718690)

  • [RHEL 7.7] AMD Rome: EDAC amd64: Error: F0 not found, device 0x1460 (broken BIOS?) (BZ#1720266)

  • [AMD FEAT RHEL 7.7]: AMD Rome Support (BZ#1721604)

  • AMD Rome: Intermittent NMI received for unknown reason (BZ#1721611)

  • [Hyper-V] Support Mv2 (M208s/ms_v2 & M416s/ms_v2) instance sizes (increased limits, vIOMMU) (BZ#1727109)

  • AMD Rome: sensors detect is not locating any family 17h sensors (BZ#1728000)

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