| Name | CVE-2025-47712 |
| Description | A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1105228 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| nbdkit (PTS) | bullseye | 1.24.1-2 | vulnerable |
| bookworm | 1.32.5-1 | vulnerable | |
| trixie | 1.42.3-1 | fixed | |
| forky | 1.46.2-4 | fixed | |
| sid | 1.46.2-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| nbdkit | source | (unstable) | 1.42.3-1 | 1105228 |
[bookworm] - nbdkit <no-dsa> (Minor issue)
[bullseye] - nbdkit <postponed> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2365724
Fixed by: https://gitlab.com/nbdkit/nbdkit/-/commit/a486f88d1eea653ea88b0bf8804c4825dab25ec7 (v1.43.7)
Fixed by: https://gitlab.com/nbdkit/nbdkit/-/commit/c3ed72811aca5684490b198737b2f0b921741547 (v1.42.3)