RHSA-2021:2733: Important: kernel security update
First published: Tue Jul 20 2021(Updated: )
The kernel packages contain the Linux kernel, the core of any Linux operating system.<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 via PI futex state (CVE-2021-3347)</li> <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/kernel | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-abi-whitelists | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-debug | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-debug-debuginfo | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-debug-devel | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-debuginfo | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-devel | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-doc | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-headers | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-tools | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-tools-debuginfo | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-tools-libs | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/kernel-tools-libs-devel | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/perf | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/perf-debuginfo | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/python-perf | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
| redhat/python-perf-debuginfo | <3.10.0-514.90.2.el7 | 3.10.0-514.90.2.el7 |
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Reference Links
Frequently Asked Questions
What security vulnerabilities are addressed in RHSA-2021:2733?
RHSA-2021:2733 addresses vulnerabilities CVE-2021-33909 and CVE-2021-3347 among others.
What is the recommended version of the kernel to mitigate RHSA-2021:2733?
The recommended version to mitigate RHSA-2021:2733 is kernel version 3.10.0-514.90.2.el7.
What are the potential impacts of not fixing RHSA-2021:2733?
Failing to fix RHSA-2021:2733 may expose systems to remote code execution and other security risks.
How can I check if my system is affected by RHSA-2021:2733?
You can check if your system is affected by comparing your kernel version against the affected versions listed in RHSA-2021:2733.
What is the urgency of applying the fix for RHSA-2021:2733?
It is critical to apply the fix for RHSA-2021:2733 as soon as possible to protect your systems from discovered vulnerabilities.
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