RHSA-2021:0765: Important: kernel security, bug fix, and enhancement update

First published: Tue Mar 09 2021(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: bad kfree in auditfilter.c may lead to escalation of privilege (CVE-2020-0444)</li> <li> kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)</li> <li> kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)</li> <li> kernel: performance counters race condition use-after-free (CVE-2020-14351)</li> <li> kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705)</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> RHEL8.1 - net/smc: fix silent data corruption in SMC (BZ#1882241)</li> <li> [mlx5] VF interface stats are not reflected in "ip -s link show" / "ifconfig &lt;vf&gt;" commands (BZ#1889301)</li> <li> [mlx5] IPV6 TOS rewrite flows are not getting offloaded in HW (BZ#1897689)</li> <li> RHEL 8.1 - Call traces show I/O stuck for more than 120 sec when at least one path is available for NVMe/IB (BZ#1901525)</li> <li> RHEL8: kernel-rt: kernel BUG at kernel/sched/deadline.c:1462! (BZ#1908732)</li> <li> [Hyper-V][RHEL-8] Request to included a commit that adds a timeout to vmbus_wait_for_unload (BZ#1913529)</li> <li> Host becomes unresponsive during stress-ng --cyclic test rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (BZ#1913965)</li> <li> race condition when creating child sockets from syncookies (BZ#1915530)</li> <li> Missing mm backport to fix regression introduced by another mm backport (BZ#1915815)</li> <li> On System Z, a hash needs state randomized for entropy extraction (BZ#1915817)</li> <li> [Hyper-V][RHEL-8]video: hyperv_fb: Fix the cache type when mapping the VRAM Edit (BZ#1917712)</li> <li> kvm-rhel8.3 [AMD] - system crash observed while powering on virtual machine with attached VF interfaces. (BZ#1919886)</li> <li> [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap (BZ#1929909)</li> <li> rpmbuild cannot build the userspace RPMs in the kernel package when the kernel itself is not built (BZ#1929911)</li> Enhancement(s):<br><li> [Mellanox 8.4 FEAT] mlx5: Add messages when VF-LAG fails to start (BZ#1892345)</li> <li> Add kernel option to change cpumask for kernel threads (BZ#1915344)</li>

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