Linux Kernel - Multiple Vulnerabilities
Summary
DLA-993-1: linux - security update. Affects linux versions < 3.2.89-1. Fixed in 3.2.89-1. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing system resources and providing essential functionality. It is widely used in various distributions, including Debian. However, several vulnerabilities have been discovered in the Linux kernel that could lead to privilege escalation, denial of service, or information leaks.
Vulnerability Detail
The vulnerabilities affecting the Linux kernel include:
- CVE-2017-0605: A buffer overflow flaw in the trace subsystem.
- CVE-2017-7487: A reference counter leak in the ipxitf_ioctl function, resulting in a use-after-free vulnerability.
- CVE-2017-7645: Out-of-bounds memory access issue in the NFSv2 and NFSv3 server implementations, leading to denial of service.
- CVE-2017-7895: Improper payload bounds checking in the NFSv2 and NFSv3 server implementations, allowing an attacker to read arbitrary memory.
- CVE-2017-8890: Double free vulnerability in the net_csk_clone_lock() function, leading to denial of service or potential impact.
- CVE-2017-8924: Sensitive information leakage in the io_ti USB serial driver when a malicious USB device is connected.
- CVE-2017-8925: Reference counter leak in the omninet USB serial driver, resulting in a use-after-free vulnerability.
- CVE-2017-9074: IPv6 fragmentation implementation flaw allowing information leakage or denial of service.
- CVE-2017-9075: SCTP/IPv6 implementation flaw similar to CVE-2017-8890, resulting in a use-after-free vulnerability.
- CVE-2017-9076/CVE-2017-9077: TCP/IPv6 and DCCP/IPv6 implementation flaws similar to CVE-2017-9075.
- CVE-2017-9242: Packet buffer overrun in the IPv6 implementation, leading to denial of service and potential privilege escalation.
- CVE-2017-1000364: Insufficiently large stack guard page, allowing privilege escalation.
These vulnerabilities pose risks such as unauthorized access, data leakage, and system instability.
How To Fix
Minimum fixed version
3.2.89-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
No specific workarounds were mentioned for these vulnerabilities.
Conclusion
Multiple vulnerabilities have been discovered in the Linux kernel, which could lead to privilege escalation, denial of service, or information leaks. It is crucial to update the Linux kernel packages to the recommended versions or later to ensure the security of the system. For further assistance or support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for linux →
FAQ
These vulnerabilities could allow an attacker to escalate privileges, cause denial of service, or leak sensitive information.
Various researchers and organizations, including Li Qiang, Tuomas Haanpaa, Matti Kamunen, Ari Kauppi, Johan Hovold, Andrey Konovalov, and Cong Wang.
The vulnerabilities impact the Linux kernel, which is used by various distributions. It is recommended to check for updates specific to your distribution.
Some of the vulnerabilities can be exploited remotely, while others require local access to the system.
Specific details about known exploits were not provided in the vulnerability report. However, it is important to apply the recommended updates to mitigate the risks.
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