SB2025071455 - Fedora 41 update for nbdkit

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Main Vulnerability Database SB2025071455

SB2025071455 - Fedora 41 update for nbdkit

Published: July 14, 2025

Security Bulletin ID SB2025071455
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Adjecent network
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Off-by-one (CVE-ID: CVE-2025-47711)

CWE-ID: CWE-193 - Off-by-one Error

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to perform a denial of service attack.

The vulnerability exists due to an off-by-one error handling responses from its plugins regarding the status of data blocks. A remote client can request for a very large data range to trigger an off-by-one error and crash the server. 


2) Reachable assertion (CVE-ID: CVE-2025-47712)

CWE-ID: CWE-617 - Reachable Assertion

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion in the nbdkit "blocksize" filter. A remote client can request block status information for a very large data range, trigger an integer overflow and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References