Description
There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error, leading to a denial-of-service.
Problem types
Product status
1.11.10 (semver) before 1.38.6
1.40.0 (semver) before 1.40.6
1.42.0 (semver) before 1.42.3
Timeline
| 2025-05-12: | Reported to Red Hat. |
| 2025-04-23: | Made public. |
References
access.redhat.com/security/cve/CVE-2025-47711
bugzilla.redhat.com/show_bug.cgi?id=2365687 (RHBZ#2365687)