RHSA-2021:2719: Important: kernel-rt security and bug fix update
First published: Tue Jul 20 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: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)</li> <li> kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)</li> <li> kernel: perf_event_parse_addr_filter memory (CVE-2020-25704)</li> <li> kernel: security bypass in certs/blacklist.c and certs/system_keyring.c (CVE-2020-26541)</li> <li> kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent (CVE-2020-35508)</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 latest RHEL-8.2.z10 Batch source tree (BZ#1968022)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-core | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-debug | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-debug-core | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-debug-debuginfo | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-debug-devel | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-debug-modules | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-debug-modules-extra | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-debuginfo | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-devel | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-modules | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-modules-extra | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-debug-kvm | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
| redhat/kernel-rt-kvm | <4.18.0-193.60.2.rt13.112.el8_2 | 4.18.0-193.60.2.rt13.112.el8_2 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1886285
- https://bugzilla.redhat.com/show_bug.cgi?id=1895961
- https://bugzilla.redhat.com/show_bug.cgi?id=1902724
- https://bugzilla.redhat.com/show_bug.cgi?id=1961305
- https://bugzilla.redhat.com/show_bug.cgi?id=1968022
- https://bugzilla.redhat.com/show_bug.cgi?id=1970273
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/security/vulnerabilities/RHSB-2021-006
- https://access.redhat.com/errata/RHSA-2021:2719 (Advisory)
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- collector/redhat-errata
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- anchor-id/RHSA-2021:2719
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