RHSA-2021:2563: Important: kpatch-patch security update
First published: Tue Jun 29 2021(Updated: )
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.<br>Security Fix(es):<br><li> kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)</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.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kpatch-patch | <4_18_0-305-1-2.el8 | 4_18_0-305-1-2.el8 |
| redhat/kpatch-patch | <4_18_0-305_3_1-1-1.el8_4 | 4_18_0-305_3_1-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305-1-2.el8 | 4_18_0-305-1-2.el8 |
| redhat/kpatch-patch | <4_18_0-305-debuginfo-1-2.el8 | 4_18_0-305-debuginfo-1-2.el8 |
| redhat/kpatch-patch | <4_18_0-305-debugsource-1-2.el8 | 4_18_0-305-debugsource-1-2.el8 |
| redhat/kpatch-patch | <4_18_0-305_3_1-1-1.el8_4 | 4_18_0-305_3_1-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_3_1-debuginfo-1-1.el8_4 | 4_18_0-305_3_1-debuginfo-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_3_1-debugsource-1-1.el8_4 | 4_18_0-305_3_1-debugsource-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305-1-2.el8 | 4_18_0-305-1-2.el8 |
| redhat/kpatch-patch | <4_18_0-305-debuginfo-1-2.el8 | 4_18_0-305-debuginfo-1-2.el8 |
| redhat/kpatch-patch | <4_18_0-305-debugsource-1-2.el8 | 4_18_0-305-debugsource-1-2.el8 |
| redhat/kpatch-patch | <4_18_0-305_3_1-1-1.el8_4 | 4_18_0-305_3_1-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_3_1-debuginfo-1-1.el8_4 | 4_18_0-305_3_1-debuginfo-1-1.el8_4 |
| redhat/kpatch-patch | <4_18_0-305_3_1-debugsource-1-1.el8_4 | 4_18_0-305_3_1-debugsource-1-1.el8_4 |
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Reference Links
Frequently Asked Questions
What is the severity of RHSA-2021:2563?
The severity of RHSA-2021:2563 is classified as important.
How do I fix RHSA-2021:2563?
To fix RHSA-2021:2563, you need to update the kpatch-patch package to the specified remedy versions.
What vulnerability does RHSA-2021:2563 address?
RHSA-2021:2563 addresses a use-after-free vulnerability in the Bluetooth kernel subsystem, identified as CVE-2021-33034.
Which systems are affected by RHSA-2021:2563?
RHSA-2021:2563 affects systems running specific versions of the kpatch-patch package on Red Hat Enterprise Linux.
What components are involved in the fix for RHSA-2021:2563?
The fix for RHSA-2021:2563 involves updating the kernel live patch module, specifically the kpatch-patch package.
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