CVE-2022-49053

Summary

CVE-2022-49053 is a vulnerability affecting the Linux kernel's SCSI subsystem, specifically the tcmu driver. This issue arises due to a lack of proper refcounting when tcmu_try_get_data_page() function retrieves pages. As a result, a Use-After-Free (UAF) condition may occur, allowing attackers to potentially execute arbitrary code or cause system instability. To mitigate this risk, it is essential to obtain pages under cmdr_lock to prevent concurrent tcmu_blocks_release() calls.

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