Vulnerability in Kernel package: scsi: target: tcmu: Fix possible page UAF
Summary
GSD-2022-1001955: scsi: target: tcmu: Fix possible page UAF. Affects Kernel versions < aec36b98a1bbaa84bfd8299a306e4c12314af626. 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
Background
The Kernel package is a fundamental component of the Linux operating system, responsible for managing the system's core functionality. It provides an interface between the hardware and software layers, allowing applications to communicate with the underlying hardware. The scsi: target: tcmu module within the Kernel package is specifically designed to handle SCSI target emulation for user-space applications. It allows users to create virtual SCSI devices and perform various operations on them.
However, a vulnerability has been discovered in the scsi: target: tcmu module that could potentially lead to a use-after-free (UAF) issue. This vulnerability may allow an attacker to manipulate memory pages after they have been freed, potentially leading to arbitrary code execution or system crashes.
Vulnerability Detail
The vulnerability in the scsi: target: tcmu module arises from a possible use-after-free (UAF) issue. When certain operations are performed on virtual SCSI devices, there is a chance that memory pages associated with these devices are not properly handled. This can result in the pages being freed prematurely, but still accessible to an attacker. By exploiting this vulnerability, an attacker may be able to manipulate the freed memory pages to execute arbitrary code or cause system instability.
It is important to note that the impact and attack plausibility of this vulnerability have not been proven yet. However, it is recommended to address this issue to ensure the security and stability of the system.
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. It is recommended to apply the fix mentioned in the 'how_to_fix' section by updating the Linux Kernel package to the latest version.
Conclusion
In conclusion, a vulnerability has been identified in the scsi: target: tcmu module of the Kernel package. This vulnerability could potentially lead to a use-after-free (UAF) issue, allowing an attacker to execute arbitrary code or cause system instability. It is crucial to update the Linux Kernel package to the latest version to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The Kernel package is a core component of the Linux operating system, responsible for managing the system's core functionality and providing an interface between hardware and software layers.
The scsi: target: tcmu module is a part of the Kernel package that handles SCSI target emulation for user-space applications. It allows users to create virtual SCSI devices and perform operations on them.
A use-after-free (UAF) vulnerability occurs when a program continues to use a memory reference after it has been freed. This can lead to memory corruption and potentially allow an attacker to execute arbitrary code or cause system instability.
If exploited, this vulnerability could allow an attacker to execute arbitrary code or cause system crashes, compromising the security and stability of the system.
To fix this vulnerability, it is recommended to update the Linux Kernel package to version v5.10.112 or later. The fix can be found in commit aec36b98a1bbaa84bfd8299a306e4c12314af626 of the Linux Kernel repository.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
