- Vulnerability/
- RHSA-2021:3802
RHSA-2021:3802: Important: kernel-rt security and bug fix update
First published: Tue Oct 12 2021(Updated: )
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.<br>Security Fix(es):<br><li> kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)</li> <li> kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653)</li> <li> kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656)</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> Indefinite waiting for RCU callback while removing cgroup (BZ#1967844)</li> <li> kernel-rt: update to the latest RHEL7.9.z9 source tree (BZ#2002994)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-debug | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-debug-debuginfo | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-debug-devel | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-debuginfo | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-devel | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-doc | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-trace | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-trace-debuginfo | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-trace-devel | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-debug-kvm | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-debug-kvm-debuginfo | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-kvm | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-kvm-debuginfo | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-trace-kvm | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
| redhat/kernel-rt-trace-kvm-debuginfo | <3.10.0-1160.45.1.rt56.1185.el7 | 3.10.0-1160.45.1.rt56.1185.el7 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1965461
- https://bugzilla.redhat.com/show_bug.cgi?id=1967844
- https://bugzilla.redhat.com/show_bug.cgi?id=1983686
- https://bugzilla.redhat.com/show_bug.cgi?id=1983988
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/errata/RHSA-2021:3802 (Advisory)
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