CVE-2025-47712

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.

Score

CVSS 3.1 6.5 Medium

Status

Modified - secalert@redhat.com

Published

2025-06-09

Last modified

2026-06-30

Weaknesses

CWE-190

Affected products

• Nbdkit (Nbdkit Project)
• Advanced Virtualization (Redhat)
• Enterprise Linux (Redhat)

References

• https://access.redhat.com/security/cve/CVE-2025-47712
• https://bugzilla.redhat.com/show_bug.cgi?id=2365724
• https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/67E7AASHHADIY7VAD3FFW2I67LTWVWYF/