Description

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.

References 4

• git.kernel.org https://git.kernel.org/stable/c/9b9d253908478f504297ac283c514e5953ddafa6
• git.kernel.org https://git.kernel.org/stable/c/b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2
• git.kernel.org https://git.kernel.org/stable/c/b3a10eca24fcfe913c0875e620f19596001bd6dc
• git.kernel.org https://git.kernel.org/stable/c/ee998cdbff6680891b0efd9d6ce53a388e5342c3

Remediation