vulnerability / NVI-00015082 / Revision 1
rclone: Infinite Scale TUS Creation Transport Error Causes a Nil-Response Panic
GitHub lists this reviewed advisory for github.com/rclone/rclone. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
5.3 medium
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
github.com/rclone/rclone
source listed<= 1.74.0
## 1. Summary A transport failure during the initial Infinite Scale TUS creation POST can return `(nil response, non-nil error)`. Rclone dereferences the nil response before processing the error and panics. The production `CreateUploader` path reproduced the crash against a closed endpoint. The security case is deployment-dependent. A one-shot upload already fails when its endpoint resets, while RC jobs recover panics in `fs/rc/jobs/job.go` and return a job error. The incremental denial of service is strongest in a long-lived VFS mount or concurrent/multi-remote CLI process where the upload runs in an unrecovered goroutine and the panic terminates unrelated work. ## 2. Affected Assets & Attack Surface - Verified rclone revision: `a0c09f1381ae93e2a9a33c529d170186c61ad058` (`v1.74.0-240-ga0c09f138`) - Current-master check: `backend/webdav/tus.go` was unchanged at master commit `961266888fe797390c535386f3b3aa46f4853602` on 2026-07-18 - Response evaluation: `backend/webdav/tus.go:45-59` - Creation path: `backend/webdav/tus.go:61-107` - Unrecovered VFS caller: `vfs/write.go:71-81` - Contained RC caller: `fs/rc/jobs/job.go:107-115` - Configuration: Infinite Scale WebDAV uploads using
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
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- GHSA-3x6r-wxxg-53vv ↗
GitHub Advisory Database · vendor advisory
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Public revision history
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- Revision 1 ·
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