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Security Fix(es):
- kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)
- kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)
- kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)
- kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532)
- kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427)
- kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c (CVE-2020-7053)
- kernel: performance counters race condition use-after-free (CVE-2020-14351)
- kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints (CVE-2020-25645)
- kernel: use-after-free in read in vt_do_kdgkb_ioctl (CVE-2020-25656)
- kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705)
- kernel: increase slab leak leads to DoS (CVE-2021-20265)
Bug Fix(es):
- BUG: scheduling while atomic: memory allocation under spinlock in scsi_register_device_handler() (BZ#1619147)
- WARNING in __iscsit_free_cmd during recovery Abort (BZ#1784540)
- lpfc does not issue adisc to fcp-2 devices, does not respond to nvme targer that send an adisc. (BZ#1875961)
- Panic in semctl_nolock.constprop.15+0x25b (BZ#1877264)
- [RHEL 7.7][md]Crash due to invalid pool workqueue pointer, work queue race (BZ#1889372)
- Guest crash on intel CPU with -cpu host,-spec-ctrl,+ibpb (BZ#1890669)
- RHEL7.9 - kernel/uv: handle length extension properly (BZ#1899172)
- Commit b144f013fc16a06d7a4b9a4be668a3583fafeda2 'i40e: don't report link up for a VF who hasn't enabled queues' introducing issues with VM using DPDK (BZ#1901064)
- writing to /sys/devices/(...)/net/eno49/queues/tx-16/xps_cpus triggers kernel panic (BZ#1903819)
- [Hyper-V][RHEL-7.9]video: hyperv_fb: Fix the cache type when mapping the VRAM Edit (BZ#1908896)
- kvm-rhel7.9 [AMD] - system crash observed while powering on virtual machine with attached VF interfaces. (BZ#1909036)
- kernel: nvme nvme7: Connect command failed, error wo/DNR bit: 2 (BZ#1910817)
- dm-mirror crashes from assuming underlying storage will have a non-NULL merge_bvec_fn (BZ#1916407)
- watchdog: use nmi registers snapshot in hardlockup handler (BZ#1916589)
- [DELL EMC 7.9 BUG] - Intel E810 NIC interfaces are not functional in RHEL 7.9 on system with AMD Rome CPUs (BZ#1918273)
- [DELL EMC BUG] RHEL system log shows AMD-Vi error when system connected with Gen 4 NVMe drives. (BZ#1921187)
https://access.redhat.com/errata/product/69/ver=/rhel---7/x86_64/RHSA-2021:0856
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