RHSA-2022:0771: Important: kernel-rt security and bug fix update
First published: Tue Mar 08 2022(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: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)</li> <li> kernel: use-after-free in RDMA listen() (CVE-2021-4028)</li> <li> kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)</li> <li> kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS (CVE-2022-0435)</li> <li> kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)</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> kernel-rt: update RT source tree to the RHEL-8.4.z7 source tree (BZ#2042461)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-core | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-debug | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-debug-core | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-debug-debuginfo | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-debug-devel | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-debug-modules | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-debug-modules-extra | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-debuginfo | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-devel | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-modules | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-modules-extra | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-debug-kvm | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
| redhat/kernel-rt-kvm | <4.18.0-305.40.1.rt7.112.el8_4 | 4.18.0-305.40.1.rt7.112.el8_4 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2027201
- https://bugzilla.redhat.com/show_bug.cgi?id=2031930
- https://bugzilla.redhat.com/show_bug.cgi?id=2042404
- https://bugzilla.redhat.com/show_bug.cgi?id=2044809
- https://bugzilla.redhat.com/show_bug.cgi?id=2048738
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/errata/RHSA-2022:0771 (Advisory)
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