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Vulnerability DatabaseCVE-2022-49780
CVE-2022-49780:
Linux Kernel vulnerability analysis and mitigation
Overview
A vulnerability (CVE-2022-49780) was identified in the Linux kernel's SCSI target subsystem, specifically in the tcm_loop module. The issue was discovered and disclosed on May 1, 2025, affecting the Linux kernel's SCSI target functionality (NVD, Wiz).
Technical details
The vulnerability occurs in the tcmloopsetuphbabus() function when deviceregister() fails. In this scenario, the name allocated by devsetname() needs to be freed. According to the deviceregister() documentation, putdevice() should be used to release the reference in the error path. The fix involves calling putdevice() to ensure the name can be freed in kobjectcleanup(). The 'tlhba' component is handled separately and freed in tcmlooprelease_adapter() (NVD).
Impact
The vulnerability could lead to a memory leak in the Linux kernel's SCSI target subsystem, potentially affecting system resource management (Wiz).
Mitigation and workarounds
The issue has been resolved through a patch that properly implements the cleanup process using putdevice() in the error path of tcmloopsetuphba_bus() (Wiz).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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