Important: Kernel Security and Bug Fix Update - ALSA-2023:4517
Summary
ALSA-2023:4517: Important: kernel security and bug fix update. Affects bpftool versions < 4.18.0-477.21.1.el8_8. Fixed in 4.18.0-477.21.1.el8_8. How to fix ↓
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Background
The kernel is the core component of any Linux operating system. It provides essential functionality and interfaces for the system to function properly. The ALSA-2023:4517 vulnerability affects various packages related to the kernel in AlmaLinux 8.
Vulnerability Detail
The ALSA-2023:4517 vulnerability includes several security issues in the Linux kernel. These issues include use-after-free vulnerabilities in various components such as l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c, tcindex filter, perf_group_detach function of the Linux Kernel Performance Events, and XFS subsystem. Additionally, there is an out-of-bounds write vulnerability in xgene_slimpro_i2c_xfer() function in the i2c module. These vulnerabilities can lead to privilege escalation, OOB access, and potential code execution.
How To Fix
Minimum fixed version
4.18.0-477.21.1.el8_8
This is the first release that contains the fix.
sudo dnf update bpftoolTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The ALSA-2023:4517 vulnerability in the Linux kernel packages of AlmaLinux 8 poses a significant security risk. It is crucial to update the affected packages to the recommended version or later to mitigate the vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The ALSA-2023:4517 vulnerability can lead to privilege escalation, code execution, and potential security breaches in the affected Linux kernel packages.
The ALSA-2023:4517 vulnerability affects various packages related to the kernel in AlmaLinux 8, including bpftool, kernel, kernel-abi-stablelists, kernel-core, kernel-cross-headers, kernel-debug, kernel-debug-core, kernel-debug-devel, kernel-debug-modules, kernel-debug-modules-extra, kernel-devel, kernel-doc, kernel-modules, kernel-modules-extra, kernel-tools, kernel-tools-libs, kernel-tools-libs-devel, kernel-zfcpdump, kernel-zfcpdump-core, kernel-zfcpdump-devel, kernel-zfcpdump-modules, kernel-zfcpdump-modules-extra, perf, and python3-perf.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by the ALSA-2023:4517 vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities.
Yes, a patch is available for the ALSA-2023:4517 vulnerability. It is recommended to update the affected packages to version 4.18.0-477.21.1.el8_8 or later to mitigate the vulnerability.
You can find more information about the ALSA-2023:4517 vulnerability, including the impact, CVSS score, and related details, in the CVE pages listed in the References section of the vulnerability report.
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