CVE-2025-47711

Nbdkit: nbdkit-server: off-by-one error when processing block status may lead to a denial of service

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.

Scores

Faiblesses (CWE)

• CWE-193

Références européennes

• ENISA EUVD · EUVD-2025-17431
• GCVE · GCVE-0-2025-47711

Configurations affectées (CPE NVD)

• cpe:2.3:a:nbdkit_project:nbdkit:-:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_advanced_virtualization:8.0:*:*:*:*:*:*:*

Produits affectés

Références

• https://access.redhat.com/security/cve/CVE-2025-47711
• https://bugzilla.redhat.com/show_bug.cgi?id=2365687
• https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/67E7AASHHADIY7VAD3FFW2I67LTWVWYF/

Sources