Vulnerability in mxser package: xmit_buf leak in activate when LSR == 0xff
Summary
GSD-2022-1001502: mxser: fix xmit_buf leak in activate when LSR == 0xff. Affects Kernel versions >= 6769140d304731f0a3b177470a2adb4bacd9036b, < 6c9041b2f90c0eace73106f22350e1d2c98f5edc. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
The mxser package is a part of the Linux Kernel ecosystem and is responsible for handling serial communication. It provides support for multiport serial devices. The vulnerability in question affects the activate function of the mxser package when the LSR (Line Status Register) is equal to 0xff. This vulnerability was introduced in version v2.6.33 of the Linux Kernel and has been fixed in version v5.16.19.
Vulnerability Detail
The vulnerability arises due to a memory leak in the activate function of the mxser package when the LSR is set to 0xff. This can lead to a resource exhaustion issue, potentially causing system instability or denial of service. An attacker may be able to exploit this vulnerability to crash the system or execute arbitrary code. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
No workaround has been provided for this vulnerability.
Conclusion
In conclusion, the mxser package in the Linux Kernel is vulnerable to a memory leak in the activate function when the LSR is set to 0xff. This vulnerability can potentially lead to system instability or denial of service. It is recommended to update the Linux Kernel to version v5.16.19 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The mxser package is a component of the Linux Kernel that handles serial communication and provides support for multiport serial devices.
The vulnerability can lead to resource exhaustion, potentially causing system instability or denial of service. An attacker may be able to crash the system or execute arbitrary code.
No, the impact and attack plausibility of this vulnerability have not been proven.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.16.19 or later.
Users can obtain the updated version of the Linux Kernel from the official Linux Kernel repository.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
