RHSA-2020:2082: Important: kernel security and bug fix update

First published: Tue May 12 2020(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)</li> <li> kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)</li> <li> Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)</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> Delay in RT task scheduled. Incorrect nr_scheduled value. (BZ#1796262)</li> <li> ixgbevf interface goes down on hypervisor and causes outage (BZ#1796799)</li> <li> kernel: UAF in cdev_put() when a PTP device is removed while its chardev is open (BZ#1798396)</li> <li> [HPEMC RHEL 7.7 RHEL 7.8 REGRESSION] kernel not populating numa_nod in /sys/devices... for PMEM (BZ#1801699)</li> <li> Unable to exclude files from auditing (BZ#1806430)</li> <li> DNAT'd packet is not unmangled upon reply on openshift node (BZ#1806447)</li> <li> top shows super high loads when tuned profile realtime-virtual-host is applied (BZ#1808030)</li> <li> [RHEL 7.9] mdraid devices do not autocorrect read errors on parity blocks (BZ#1810062)</li> <li> Observed a memory leak while using dm-multipath (BZ#1812937)</li> <li> RHEL7.8: megaraid_sas: MSIx allocation fails in resume path (BZ#1813249)</li> <li> Backport: Guest microcode version mismatch on secondary processors (BZ#1814003)</li> <li> dm-multipath high load backport incorrect (BZ#1814537)</li> <li> qla2xxx: Urgent driver fix needed. Initiator does not relogin to target after receiving an explicit logout (BZ#1815596)</li> <li> Potential deadlock in iscsi_if_rx func (BZ#1817497)</li> <li> High iSCSI read latency resolved by 'tcp: implement coalescing on backlog queue' (BZ#1817499)</li> <li> kdump: crashkernel=xM,low is likely to fail when x is big enough (BZ#1817502)</li> <li> [RHEL7.8][Azure]Commits to resolve high network latency (BZ#1817935)</li> <li> net_sched: remove a bogus warning in hfsc (BZ#1821262)</li> <li> NETDEV WATCHDOG: enp3s0 (r8169): transmit queue 0 timed out (BZ#1822548)</li> <li> BUG: unable to handle kernel NULL pointer dereference at fl_dump (BZ#1824548)</li> <li> [ Marvell 7.9] update qla2xxx driver with critical bug fixes (BZ#1827274)</li>

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