Script execution on Linux target fails with “Permission Denied” even when executed as root.

Advanced Alternate Solution

If, for security reasons, it is not feasible to disable noexec on the /tmp folder, you may create the following registry value on the Veeam Backup Server to assign a different folder to be used. This change will change the path Veeam Backup & Replication uses when communicating with all Linux servers. If you use this registry setting, you must ensure that the folder path specified in the registry value exists on every Linux server that Veeam will communicate with. If not, some tasks/jobs will failExamples:
• Oracle Guest Processing
• Pre-Freeze/Post-Thaw Scripts
• File Level Restore as they will not attempt to create the folder path.

Key Location: HKLM\SOFTWARE\Veeam\Veeam Backup and Replication\
Value Name: LinAgentFolder
Value Type: String (REG_SZ) Value
Value Data: 

The Value Data specified must be a path without the trailing slash

Example:

• /folder/subfolder   ✔
• /folder/subfolder/   ✘

Reference Information:

• $TMP and $HOME variables can be used
• default execute directory /tmp for Linux servers