RHSA-2021:3725: Important: kernel security and bug fix update
First published: Tue Oct 05 2021(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<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: 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: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)</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> [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap [7.9.z] (BZ#1975161)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-abi-whitelists | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-debug | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-debug-debuginfo | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-debug-devel | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-debuginfo | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-devel | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-doc | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-headers | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-tools | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-tools-debuginfo | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-tools-libs | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/kernel-tools-libs-devel | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/perf | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/perf-debuginfo | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/python-perf | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
| redhat/python-perf-debuginfo | <3.10.0-693.94.1.el7 | 3.10.0-693.94.1.el7 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1965461
- https://bugzilla.redhat.com/show_bug.cgi?id=1970807
- https://bugzilla.redhat.com/show_bug.cgi?id=1980101
- https://bugzilla.redhat.com/show_bug.cgi?id=1986506
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/errata/RHSA-2021:3725 (Advisory)
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