RHSA-2021:3548: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es):

• kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653) 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. Bug Fix(es):
• RHEL8.4 Nightly[0308] - HST:STC950:Fleetwood: LPAR crashed during LPM: BUG at lib/locks.c:34! (using ibmvfc) (BZ#1969792)
• RHEL8.2 - s390/vtime: fix increased steal time accounting (BZ#1988386)
• [FJ8.4 Bug]: Installation of RHEL8.4 hang up on a Tatlow platform while loading intel_lpss_pci module. (BZ#1989560)
• kernel panic in drm_fb_helper_dirty_work() caused by a race condition qxl driver (BZ#1992839)
• [RHEL8.4] TIOCGSERIAL ioctl fails on serial device (BZ#1993872)
• RHEL8.4 Nightly[0208] - kernel panic when executing test case for persistent device configuration (using DASD) (BZ#1995206)
• Killing ceph daemon leaving an unhealthy ocs/ocp cluster (worker node/s NotReady) (BZ#1995862)
• ceph: potential data corruption in cephfs write_begin codepath (BZ#1996680)
• libceph: allow addrvecs with a single NONE/blank address (BZ#1996682)
• [iavf] traffic stops after host sets vf trust on (BZ#1997536)
• [ice][iavf] hit some call trace and system panic when create-remove-vfs in loop (BZ#1997538)
• Missing backport of IMA boot aggregate calculation in rhel 8.4 kernel (BZ#1997766)
• XArray tests broken for single processor (BZ#1997997)
• [RHEL-8.4] mlock() end up returning -EINVAL instead of -ENOMEM in rewriting the upper address bits. (BZ#1997998)
• Kernel panic at n_tty_set_termios+0x30 (BZ#1997999)
• [ice]BUG: scheduling while atomic: ifenslave/270215/0x00000200 (BZ#2000129)
• [ice]port lost connectivity after removing from bonding (BZ#2000130) Enhancement(s):
• [Mellanox 8.5 FEAT] mlx5: drivers update upto Linux v5.12 (BZ#1983681) Related CVEs:
• CVE-2021-3653: kernel: SVM nested virtualization issue in KVM (AVIC support)