RHSA-2021:3328: Important: kernel-rt security and bug fix update
First published: Tue Aug 31 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: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)</li> <li> kernel: race condition for removal of the HCI controller (CVE-2021-32399)</li> <li> kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154)</li> <li> kernel: lack a full memory barrier upon the assignment of a new table value in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h may lead to DoS (CVE-2021-29650)</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 to the latest RHEL7.9.z8 source tree (BZ#1982927)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-debug | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-debug-debuginfo | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-debug-devel | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-debuginfo | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-devel | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-doc | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-trace | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-trace-debuginfo | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-trace-devel | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-debug-kvm | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-debug-kvm-debuginfo | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-kvm | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-kvm-debuginfo | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-trace-kvm | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
| redhat/kernel-rt-trace-kvm-debuginfo | <3.10.0-1160.41.1.rt56.1181.el7 | 3.10.0-1160.41.1.rt56.1181.el7 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1945388
- https://bugzilla.redhat.com/show_bug.cgi?id=1946684
- https://bugzilla.redhat.com/show_bug.cgi?id=1970807
- https://bugzilla.redhat.com/show_bug.cgi?id=1980101
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/errata/RHSA-2021:3328 (Advisory)
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