RHSA-2021:3548: Moderate: kernel security, bug fix, and enhancement update
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 intellpsspci module. (BZ#1989560) kernel panic in drmfbhelperdirtywork() 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 writebegin 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 nttysettermios+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)
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Frequently Asked Questions
What is the severity of RHSA-2021:3548?
RHSA-2021:3548 addresses a high-severity vulnerability related to SVM nested virtualization issues in KVM.
How do I fix RHSA-2021:3548?
To fix RHSA-2021:3548, update your kernel to version 4.18.0-305.19.1.el8_4.
What systems are affected by RHSA-2021:3548?
RHSA-2021:3548 affects various Linux systems running specific versions of the kernel and related packages.
What packages are included in the RHSA-2021:3548 advisory?
The RHSA-2021:3548 advisory includes several packages such as kernel, kernel-core, kernel-debug, and bpftool.
Is a reboot required after applying RHSA-2021:3548?
Yes, a reboot is typically required to apply the updates related to RHSA-2021:3548.