CVE-2025-47711
Nbdkit: nbdkit-server: off-by-one error when processing block status may lead to a denial of service
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.38.6, 1.40.6, 1.42.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- nbdkit
From 1.11.10 · fixed in 1.38.6; From 1.40.0 · fixed in 1.40.6; From 1.42.0 · fixed in 1.42.3
- nbdkit
Version range not reported
- nbdkit
Version range not reported
- virt:rhel/nbdkit
Version range not reported
- virt:8.2/nbdkit
Version range not reported
- virt:av/nbdkit
Version range not reported
- nbdkit
Version range not reported