CVE-2026-45922

Summary

In the Linux kernel, the following vulnerability has been resolved:

RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler

The UVERBS_HANDLER(MLX5_IB_METHOD_GET_DATA_DIRECT_SYSFS_PATH) function allocates memory for the device path using kobject_get_path(). If the length of the device path exceeds the output buffer length, the function returns -ENOSPC but does not free the allocated memory, resulting in a memory leak.

Add a kfree() call to the error path to ensure the allocated memory is properly freed.

Compile tested only. Issue found using a prototype static analysis tool and code review.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxec7ad6530909983c8736c80af46e3529ce7bab55 < ee998cdbff6680891b0efd9d6ce53a388e5342c3affected
LinuxLinuxec7ad6530909983c8736c80af46e3529ce7bab55 < b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2affected
LinuxLinuxec7ad6530909983c8736c80af46e3529ce7bab55 < b3a10eca24fcfe913c0875e620f19596001bd6dcaffected
LinuxLinuxec7ad6530909983c8736c80af46e3529ce7bab55 < 9b9d253908478f504297ac283c514e5953ddafa6affected
LinuxLinux6.12affected
LinuxLinux0 < 6.12unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.14 <= 6.18.*unaffected
LinuxLinux6.19.4 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References