Moderate: kernel security, bug fix, and enhancement update - ALSA-2022:7683
Summary
ALSA-2022:7683: Moderate: kernel security, bug fix, and enhancement update. Affects bpftool versions < 4.18.0-425.3.1.el8. Fixed in 4.18.0-425.3.1.el8. 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 various hardware devices, system processes, and user applications.
Vulnerability Detail
This vulnerability allows an off-path attacker to inject data or terminate a victim's TCP session. It also includes a race condition in the VT_RESIZEX ioctl, a use-after-free vulnerability in the sco_sock_sendmsg() function, a memory leak in the video_usercopy function, a NULL pointer dereference in smb2_ioctl_query_info, and several other vulnerabilities that can lead to privilege escalation, denial of service, information leaks, and other security issues.
How To Fix
Minimum fixed version
4.18.0-425.3.1.el8
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 are no specific workarounds mentioned for this vulnerability.
Conclusion
In conclusion, this vulnerability in the kernel packages can lead to various security issues, including data injection, TCP session termination, privilege escalation, denial of service, and information leaks. It is crucial to update the affected packages to the recommended version or apply the latest security updates to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for bpftool →
FAQ
This vulnerability can allow an attacker to inject data or terminate TCP sessions, escalate privileges, cause denial of service, leak information, and perform other malicious activities.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and it will analyze and alert you if any vulnerabilities are found.
There are no known exploits for this vulnerability at the time of this report. However, it is important to apply the recommended security updates to mitigate the risk.
For more details about this vulnerability, including the impact, CVSS score, acknowledgments, and related information, refer to the CVE page(s) listed in the References section of the original vulnerability report.
You can find more detailed information about the changes in this release by referring to the AlmaLinux Release Notes linked in the References section of the original vulnerability report.
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