RHSA-2020:5437: Important: kernel security and bug fix update

First published: Tue Dec 15 2020(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385)</li> <li> kernel: The flow_dissector feature allows device tracking (CVE-2019-18282)</li> <li> kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned. (CVE-2020-10769)</li> <li> kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314)</li> <li> kernel: umask not applied on filesystem without ACL support (CVE-2020-24394)</li> <li> kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212)</li> <li> kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow (CVE-2020-25643)</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> WARNING in set_restore_sigmask at ./arch/x86/include/asm/thread_info.h:298 sigsuspend+0x6d/0x70 (BZ#1704650)</li> <li> [i40e] VFs see other VF's outgoing traffic (BZ#1845677)</li> <li> [Hyper-V][RHEL7] Two fixes for kdump over network (BZ#1846667)</li> <li> Loop in __run_timers() because base-&gt;timer_jiffies is very far behind causes a lockup condition. (BZ#1849716)</li> <li> XFS transaction overrun when running docker on VMWARE (overlay fs) (BZ#1857203)</li> <li> RHEL 7.9 NVMe/IB - Host crash encountered during array upgrade (BZ#1857397)</li> <li> False positive hard lockup detected while disabling the hard lockup detector via sysctl -w kernel.watchdog=0 (BZ#1860661)</li> <li> [Hyper-V][RHEL-7] Only notify Hyper-V for die events that are oops (BZ#1868130)</li> <li> Linux kernel crash due to openvswitch module (BZ#1869190)</li> <li> 'nodfs' option not working when using SMB2+ (BZ#1873033)</li> <li> RHEL7.7 zstream - ESS - kernel panic triggered by freelist pointer corruption (BZ#1873189)</li> <li> destroy_cfs_bandwidth() is called by free_fair_sched_group() without calling init_cfs_bandwidth() (BZ#1878000)</li> <li> NULL pointer at nvme_rdma_setup_ctrl+0x1c2/0x8d0 [nvme_rdma] when discover E5700 (BZ#1878950)</li> <li> IB Infiniband RDMA mlx5_ib is freeing a kmalloc-512 cache that it does not own causing memory corruption. (BZ#1880184)</li> <li> [Azure][RHEL7] Two Patches Needed To Enable Azure Host Time-syncing in VMs (BZ#1884735)</li> <li> connect AF_UNSPEC on a connecting AF_INET6 socket returns an error (BZ#1886305)</li> <li> Rebuilding the grub with the CPU flag 'avx' disabled (clearcpuid=156) triggers kernel panic in xor_avx_2() (BZ#1886792)</li> <li> nf_conntrack_sctp.h is not usable due to a missing commit (BZ#1887975)</li> <li> Starting pvmove on top of physical volumes on MD devices causes IO error on ongoing IO (BZ#1890059)</li>

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