Important: kernel security, bug fix, and enhancement update - ALSA-2023:1566
Summary
ALSA-2023:1566: Important: kernel security, bug fix, and enhancement update. Affects bpftool versions < 4.18.0-425.19.2.el8_7. Fixed in 4.18.0-425.19.2.el8_7. How to fix ↓
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Background
The kernel packages contain the Linux kernel, which serves as the core of any Linux operating system. It provides essential functionality and interfaces for the system's hardware and software components.
Vulnerability Detail
This update addresses multiple security vulnerabilities in the kernel:
- CVE-2022-4378: A stack overflow vulnerability in the do_proc_dointvec and proc_skip_spaces functions could allow an attacker to execute arbitrary code or cause a denial of service.
- CVE-2023-0266: A use-after-free vulnerability in the ALSA pcm module could be exploited by an attacker to execute arbitrary code or cause a denial of service.
- CVE-2023-0386: A privilege escalation vulnerability in the FUSE filesystem could allow a low-privileged user to gain elevated privileges.
- CVE-2022-4269: A CPU soft lockup vulnerability in the TC mirred egress-to-ingress action of the net subsystem could cause a denial of service.
These vulnerabilities could have various impacts, including remote code execution, privilege escalation, and denial of service.
How To Fix
Minimum fixed version
4.18.0-425.19.2.el8_7
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
No specific workaround has been provided for these vulnerabilities. It is recommended to apply the security updates as soon as possible.
Conclusion
This update addresses multiple security vulnerabilities in the kernel. It is recommended to update the affected packages to ensure the security and stability of the system. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for bpftool →
FAQ
These vulnerabilities could allow an attacker to execute arbitrary code, escalate privileges, or cause a denial of service.
There are no known exploits for these vulnerabilities at the time of this advisory.
Yes, these vulnerabilities can be exploited remotely.
The CVSS scores for these vulnerabilities have not been provided in this advisory.
For more details about these vulnerabilities, including the impact, CVSS scores, and other related information, please refer to the CVE pages listed in the References section of the original advisory.
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